102690859 has 2 divisors, whose sum is σ = 102690860. Its totient is φ = 102690858.

The previous prime is 102690853. The next prime is 102690869. The reversal of 102690859 is 958096201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102690859 is a prime.

It is equal to p_5907559 and since 102690859 and 5907559 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (102690853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51345429 + 51345430.

It is an arithmetic number, because the mean of its divisors is an integer number (51345430).

Almost surely, 2^102690859 is an apocalyptic number.

102690859 is a deficient number, since it is larger than the sum of its proper divisors (1).

102690859 is an equidigital number, since it uses as much as digits as its factorization.

102690859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 102690859 is about 10133.6498360660. The cubic root of 102690859 is about 468.2853760862.

The spelling of 102690859 in words is "one hundred two million, six hundred ninety thousand, eight hundred fifty-nine".