655013997 has 24 divisors (see below), whose sum is σ = 1060044960. Its totient is φ = 386246880.

The previous prime is 655013993. The next prime is 655014001. The reversal of 655013997 is 799310556.

655013997 is a `hidden beast` number, since 6 + 550 + 1 + 3 + 9 + 97 = 666.

655013997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (655013993) and next prime (655014001).

It is not a de Polignac number, because 655013997 - 2² = 655013993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655013993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85747 + ... + 93072.

It is an arithmetic number, because the mean of its divisors is an integer number (44168540).

Almost surely, 2^655013997 is an apocalyptic number.

It is an amenable number.

655013997 is a deficient number, since it is larger than the sum of its proper divisors (405030963).

655013997 is a wasteful number, since it uses less digits than its factorization.

655013997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178873 (or 178870 counting only the distinct ones).

The product of its (nonzero) digits is 255150, while the sum is 45.

The square root of 655013997 is about 25593.2412367015. The cubic root of 655013997 is about 868.4607463643.

The spelling of 655013997 in words is "six hundred fifty-five million, thirteen thousand, nine hundred ninety-seven".