697423427 has 2 divisors, whose sum is σ = 697423428. Its totient is φ = 697423426.

The previous prime is 697423423. The next prime is 697423439. The reversal of 697423427 is 724324796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697423427 - 2² = 697423423 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (697423423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348711713 + 348711714.

It is an arithmetic number, because the mean of its divisors is an integer number (348711714).

Almost surely, 2^697423427 is an apocalyptic number.

697423427 is a deficient number, since it is larger than the sum of its proper divisors (1).

697423427 is an equidigital number, since it uses as much as digits as its factorization.

697423427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 44.

The square root of 697423427 is about 26408.7755679812. The cubic root of 697423427 is about 886.8132578561.

The spelling of 697423427 in words is "six hundred ninety-seven million, four hundred twenty-three thousand, four hundred twenty-seven".