61878741 has 8 divisors (see below), whose sum is σ = 83499360. Its totient is φ = 40755312.

The previous prime is 61878727. The next prime is 61878749. The reversal of 61878741 is 14787816.

It is a happy number.

61878741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61878741 - 2¹⁹ = 61354453 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 61878693 and 61878702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61878749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124006 + ... + 124503.

It is an arithmetic number, because the mean of its divisors is an integer number (10437420).

Almost surely, 2^61878741 is an apocalyptic number.

It is an amenable number.

61878741 is a deficient number, since it is larger than the sum of its proper divisors (21620619).

61878741 is a wasteful number, since it uses less digits than its factorization.

61878741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248595.

The product of its digits is 75264, while the sum is 42.

The square root of 61878741 is about 7866.3041512517. The cubic root of 61878741 is about 395.5309656993.

It can be divided in two parts, 618787 and 41, that added together give a triangular number (618828 = T₁₁₁₂).

The spelling of 61878741 in words is "sixty-one million, eight hundred seventy-eight thousand, seven hundred forty-one".