655214805 has 64 divisors (see below), whose sum is σ = 1343654400. Its totient is φ = 296732160.

The previous prime is 655214801. The next prime is 655214887. The reversal of 655214805 is 508412556.

655214805 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 655214805 - 2² = 655214801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655214805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655214801) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 99825 + ... + 106185.

It is an arithmetic number, because the mean of its divisors is an integer number (20994600).

Almost surely, 2^655214805 is an apocalyptic number.

It is an amenable number.

655214805 is an abundant number, since it is smaller than the sum of its proper divisors (688439595).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655214805 is a wasteful number, since it uses less digits than its factorization.

655214805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491 (or 6485 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 655214805 is about 25597.1640030688. The cubic root of 655214805 is about 868.5494854589.

The spelling of 655214805 in words is "six hundred fifty-five million, two hundred fourteen thousand, eight hundred five".