696989351 has 2 divisors, whose sum is σ = 696989352. Its totient is φ = 696989350.

The previous prime is 696989347. The next prime is 696989353. The reversal of 696989351 is 153989696.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 696989351 - 2² = 696989347 is a prime.

Together with 696989353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (696989353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348494675 + 348494676.

It is an arithmetic number, because the mean of its divisors is an integer number (348494676).

Almost surely, 2^696989351 is an apocalyptic number.

696989351 is a deficient number, since it is larger than the sum of its proper divisors (1).

696989351 is an equidigital number, since it uses as much as digits as its factorization.

696989351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3149280, while the sum is 56.

The square root of 696989351 is about 26400.5558842991. Note that the first 3 decimals coincide. The cubic root of 696989351 is about 886.6292356263.

The spelling of 696989351 in words is "six hundred ninety-six million, nine hundred eighty-nine thousand, three hundred fifty-one".