61886957 has 8 divisors (see below), whose sum is σ = 69841440. Its totient is φ = 54320560.

The previous prime is 61886939. The next prime is 61886969. The reversal of 61886957 is 75968816.

It is a happy number.

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 61886957 - 2⁶ = 61886893 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 (61886557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96683 + ... + 97320.

It is an arithmetic number, because the mean of its divisors is an integer number (8730180).

Almost surely, 2^61886957 is an apocalyptic number.

It is an amenable number.

61886957 is a deficient number, since it is larger than the sum of its proper divisors (7954483).

61886957 is a wasteful number, since it uses less digits than its factorization.

61886957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194043.

The product of its digits is 725760, while the sum is 50.

The square root of 61886957 is about 7866.8263613734. The cubic root of 61886957 is about 395.5484705728.

The spelling of 61886957 in words is "sixty-one million, eight hundred eighty-six thousand, nine hundred fifty-seven".