61867745 has 8 divisors (see below), whose sum is σ = 75821184. Its totient is φ = 48440944.

The previous prime is 61867739. The next prime is 61867747. The reversal of 61867745 is 54776816.

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

It is a cyclic number.

It is not a de Polignac number, because 61867745 - 2⁶ = 61867681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61867696 and 61867705.

It is not an unprimeable number, because it can be changed into a prime (61867747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131399 + ... + 131868.

It is an arithmetic number, because the mean of its divisors is an integer number (9477648).

Almost surely, 2^61867745 is an apocalyptic number.

It is an amenable number.

61867745 is a deficient number, since it is larger than the sum of its proper divisors (13953439).

61867745 is a wasteful number, since it uses less digits than its factorization.

61867745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263319.

The product of its digits is 282240, while the sum is 44.

The square root of 61867745 is about 7865.6051896850. The cubic root of 61867745 is about 395.5075353791.

It can be divided in two parts, 6186 and 7745, that added together give a palindrome (13931).

The spelling of 61867745 in words is "sixty-one million, eight hundred sixty-seven thousand, seven hundred forty-five".