697438411 has 2 divisors, whose sum is σ = 697438412. Its totient is φ = 697438410.

The previous prime is 697438381. The next prime is 697438451. The reversal of 697438411 is 114834796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697438411 - 2²⁷ = 563220683 is a prime.

It is not a weakly prime, because it can be changed into another prime (697438451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348719205 + 348719206.

It is an arithmetic number, because the mean of its divisors is an integer number (348719206).

Almost surely, 2^697438411 is an apocalyptic number.

697438411 is a deficient number, since it is larger than the sum of its proper divisors (1).

697438411 is an equidigital number, since it uses as much as digits as its factorization.

697438411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 697438411 is about 26409.0592600342. The cubic root of 697438411 is about 886.8196088112.

The spelling of 697438411 in words is "six hundred ninety-seven million, four hundred thirty-eight thousand, four hundred eleven".