83687927257 has 8 divisors (see below), whose sum is σ = 91298328192. Its totient is φ = 76077927600.

The previous prime is 83687927251. The next prime is 83687927291. The reversal of 83687927257 is 75272978638.

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 83687927257 - 2¹⁵ = 83687894489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83687927251) 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, 483507 + ... + 633367.

It is an arithmetic number, because the mean of its divisors is an integer number (11412291024).

Almost surely, 2^83687927257 is an apocalyptic number.

It is an amenable number.

83687927257 is a deficient number, since it is larger than the sum of its proper divisors (7610400935).

83687927257 is a wasteful number, since it uses less digits than its factorization.

83687927257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200639.

The product of its digits is 71124480, while the sum is 64.

The spelling of 83687927257 in words is "eighty-three billion, six hundred eighty-seven million, nine hundred twenty-seven thousand, two hundred fifty-seven".