697431428 has 12 divisors (see below), whose sum is σ = 1259876352. Its totient is φ = 337466760.

The previous prime is 697431421. The next prime is 697431433. The reversal of 697431428 is 824134796.

It is not an unprimeable number, because it can be changed into a prime (697431421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2812100 + ... + 2812347.

It is an arithmetic number, because the mean of its divisors is an integer number (104989696).

Almost surely, 2^697431428 is an apocalyptic number.

It is an amenable number.

697431428 is a deficient number, since it is larger than the sum of its proper divisors (562444924).

697431428 is a wasteful number, since it uses less digits than its factorization.

697431428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5624482 (or 5624480 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 697431428 is about 26408.9270512832. The cubic root of 697431428 is about 886.8166490841.

The spelling of 697431428 in words is "six hundred ninety-seven million, four hundred thirty-one thousand, four hundred twenty-eight".