102679857 has 24 divisors (see below), whose sum is σ = 178426560. Its totient is φ = 55585440.

The previous prime is 102679831. The next prime is 102679873. The reversal of 102679857 is 758976201.

It is not a de Polignac number, because 102679857 - 2⁶ = 102679793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102679957) 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 23 ways as a sum of consecutive naturals, for example, 41694 + ... + 44087.

It is an arithmetic number, because the mean of its divisors is an integer number (7434440).

Almost surely, 2^102679857 is an apocalyptic number.

It is an amenable number.

102679857 is a deficient number, since it is larger than the sum of its proper divisors (75746703).

102679857 is a wasteful number, since it uses less digits than its factorization.

102679857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85813 (or 85810 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 102679857 is about 10133.1069766385. The cubic root of 102679857 is about 468.2686519111.

The spelling of 102679857 in words is "one hundred two million, six hundred seventy-nine thousand, eight hundred fifty-seven".