102690899 has 2 divisors, whose sum is σ = 102690900. Its totient is φ = 102690898.

The previous prime is 102690881. The next prime is 102690919. The reversal of 102690899 is 998096201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102690899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102690859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51345449 + 51345450.

It is an arithmetic number, because the mean of its divisors is an integer number (51345450).

Almost surely, 2^102690899 is an apocalyptic number.

102690899 is a deficient number, since it is larger than the sum of its proper divisors (1).

102690899 is an equidigital number, since it uses as much as digits as its factorization.

102690899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 102690899 is about 10133.6518096884. The cubic root of 102690899 is about 468.2854368881.

The spelling of 102690899 in words is "one hundred two million, six hundred ninety thousand, eight hundred ninety-nine".