61769893 has 4 divisors (see below), whose sum is σ = 65020960. Its totient is φ = 58518828.

The previous prime is 61769849. The next prime is 61769957. The reversal of 61769893 is 39896716.

61769893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61769893 - 2¹³ = 61761701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61769803) 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 3 ways as a sum of consecutive naturals, for example, 1625505 + ... + 1625542.

It is an arithmetic number, because the mean of its divisors is an integer number (16255240).

Almost surely, 2^61769893 is an apocalyptic number.

It is an amenable number.

61769893 is a deficient number, since it is larger than the sum of its proper divisors (3251067).

61769893 is a wasteful number, since it uses less digits than its factorization.

61769893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251066.

The product of its digits is 489888, while the sum is 49.

The square root of 61769893 is about 7859.3824821038. The cubic root of 61769893 is about 395.2989095704.

The spelling of 61769893 in words is "sixty-one million, seven hundred sixty-nine thousand, eight hundred ninety-three".