655696682001 has 27 divisors (see below), whose sum is σ = 978767570313. Its totient is φ = 422981532360.

The previous prime is 655696681907. The next prime is 655696682009. The reversal of 655696682001 is 100286696556.

The square root of 655696682001 is 809751.

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

655696682001 is a `hidden beast` number, since 6 + 556 + 9 + 6 + 6 + 82 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 655696682001 - 2¹⁵ = 655696649233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655696682009) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 75302490 + ... + 75311196.

Almost surely, 2^655696682001 is an apocalyptic number.

655696682001 is the 809751-st square number.

655696682001 is the 404876-th centered octagonal number.

It is an amenable number.

655696682001 is a deficient number, since it is larger than the sum of its proper divisors (323070888312).

655696682001 is an frugal number, since it uses more digits than its factorization.

655696682001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17482 (or 8741 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 655696682001 in words is "six hundred fifty-five billion, six hundred ninety-six million, six hundred eighty-two thousand, one".