85677957 has 6 divisors (see below), whose sum is σ = 123757062. Its totient is φ = 57118632.

The previous prime is 85677953. The next prime is 85677989. The reversal of 85677957 is 75977658.

85677957 is a `hidden beast` number, since 8 + 567 + 79 + 5 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 85544001 + 133956 = 9249^2 + 366^2 .

It is not a de Polignac number, because 85677957 - 2² = 85677953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85677953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4759878 + ... + 4759895.

It is an arithmetic number, because the mean of its divisors is an integer number (20626177).

Almost surely, 2^85677957 is an apocalyptic number.

It is an amenable number.

85677957 is a deficient number, since it is larger than the sum of its proper divisors (38079105).

85677957 is a wasteful number, since it uses less digits than its factorization.

85677957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9519779 (or 9519776 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 54.

The square root of 85677957 is about 9256.2388149831. The cubic root of 85677957 is about 440.8488383151.

The spelling of 85677957 in words is "eighty-five million, six hundred seventy-seven thousand, nine hundred fifty-seven".