697220536 has 8 divisors (see below), whose sum is σ = 1307288520. Its totient is φ = 348610264.

The previous prime is 697220519. The next prime is 697220543. The reversal of 697220536 is 635022796.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×697220536² = 972232951640254592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 43576276 + ... + 43576291.

It is an arithmetic number, because the mean of its divisors is an integer number (163411065).

Almost surely, 2^697220536 is an apocalyptic number.

It is an amenable number.

697220536 is a deficient number, since it is larger than the sum of its proper divisors (610067984).

697220536 is a wasteful number, since it uses less digits than its factorization.

697220536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87152573 (or 87152569 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 697220536 is about 26404.9339328846. The cubic root of 697220536 is about 886.7272537289.

The spelling of 697220536 in words is "six hundred ninety-seven million, two hundred twenty thousand, five hundred thirty-six".