697672439 has 4 divisors (see below), whose sum is σ = 698142480. Its totient is φ = 697202400.

The previous prime is 697672429. The next prime is 697672447. The reversal of 697672439 is 934276796.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-697672439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697672429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232787 + ... + 235764.

It is an arithmetic number, because the mean of its divisors is an integer number (174535620).

Almost surely, 2^697672439 is an apocalyptic number.

697672439 is a deficient number, since it is larger than the sum of its proper divisors (470041).

697672439 is a wasteful number, since it uses less digits than its factorization.

697672439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470040.

The product of its digits is 3429216, while the sum is 53.

The square root of 697672439 is about 26413.4897164309. The cubic root of 697672439 is about 886.9187895689.

The spelling of 697672439 in words is "six hundred ninety-seven million, six hundred seventy-two thousand, four hundred thirty-nine".