655651087 has 32 divisors (see below), whose sum is σ = 891620352. Its totient is φ = 466988544.

The previous prime is 655651027. The next prime is 655651093. The reversal of 655651087 is 780156556.

It is a cyclic number.

It is not a de Polignac number, because 655651087 - 2¹⁵ = 655618319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655651027) 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, 26368 + ... + 44794.

It is an arithmetic number, because the mean of its divisors is an integer number (27863136).

Almost surely, 2^655651087 is an apocalyptic number.

655651087 is a deficient number, since it is larger than the sum of its proper divisors (235969265).

655651087 is a wasteful number, since it uses less digits than its factorization.

655651087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18487.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 655651087 is about 25605.6846618090. The cubic root of 655651087 is about 868.7422204365.

The spelling of 655651087 in words is "six hundred fifty-five million, six hundred fifty-one thousand, eighty-seven".