694690577361 has 45 divisors (see below), whose sum is σ = 1140800278233. Its totient is φ = 420974583480.

The previous prime is 694690577327. The next prime is 694690577363. The reversal of 694690577361 is 163775096496.

The square root of 694690577361 is 833481.

It is a perfect power (a square), and thus also a powerful number.

694690577361 is a `hidden beast` number, since 69 + 469 + 0 + 57 + 7 + 3 + 61 = 666.

It is not a de Polignac number, because 694690577361 - 2³⁹ = 144934763473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (694690577363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 82510410 + ... + 82518828.

Almost surely, 2^694690577361 is an apocalyptic number.

694690577361 is the 833481-st square number.

694690577361 is the 416741-st centered octagonal number.

It is an amenable number.

694690577361 is a deficient number, since it is larger than the sum of its proper divisors (446109700872).

694690577361 is an frugal number, since it uses more digits than its factorization.

694690577361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16872 (or 8433 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 63.

The spelling of 694690577361 in words is "six hundred ninety-four billion, six hundred ninety million, five hundred seventy-seven thousand, three hundred sixty-one".