697031099 has 2 divisors, whose sum is σ = 697031100. Its totient is φ = 697031098.

The previous prime is 697031053. The next prime is 697031107. The reversal of 697031099 is 990130796.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 697031099 - 2²⁰ = 695982523 is a prime.

It is not a weakly prime, because it can be changed into another prime (697031029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348515549 + 348515550.

It is an arithmetic number, because the mean of its divisors is an integer number (348515550).

Almost surely, 2^697031099 is an apocalyptic number.

697031099 is a deficient number, since it is larger than the sum of its proper divisors (1).

697031099 is an equidigital number, since it uses as much as digits as its factorization.

697031099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 697031099 is about 26401.3465376295. The cubic root of 697031099 is about 886.6469375985.

The spelling of 697031099 in words is "six hundred ninety-seven million, thirty-one thousand, ninety-nine".