655561701 has 32 divisors (see below), whose sum is σ = 1043729280. Its totient is φ = 405174528.

The previous prime is 655561691. The next prime is 655561723. The reversal of 655561701 is 107165556.

655561701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655561701 - 2⁹ = 655561189 is a prime.

It is a super-2 number, since 2×655561701² = 859522287636026802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655561771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20095 + ... + 41411.

It is an arithmetic number, because the mean of its divisors is an integer number (32616540).

Almost surely, 2^655561701 is an apocalyptic number.

It is an amenable number.

655561701 is a deficient number, since it is larger than the sum of its proper divisors (388167579).

655561701 is a wasteful number, since it uses less digits than its factorization.

655561701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21410 (or 21404 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 655561701 is about 25603.9391695887. The cubic root of 655561701 is about 868.7027396198.

The spelling of 655561701 in words is "six hundred fifty-five million, five hundred sixty-one thousand, seven hundred one".