655515366 has 16 divisors (see below), whose sum is σ = 1430215488. Its totient is φ = 198641000.

The previous prime is 655515361. The next prime is 655515383. The reversal of 655515366 is 663515556.

It is a super-2 number, since 2×655515366² = 859400790124227912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655515361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4965960 + ... + 4966091.

It is an arithmetic number, because the mean of its divisors is an integer number (89388468).

Almost surely, 2^655515366 is an apocalyptic number.

655515366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

655515366 is an abundant number, since it is smaller than the sum of its proper divisors (774700122).

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

655515366 is a wasteful number, since it uses less digits than its factorization.

655515366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9932067.

The product of its digits is 405000, while the sum is 42.

The square root of 655515366 is about 25603.0343123623. The cubic root of 655515366 is about 868.6822725456.

The spelling of 655515366 in words is "six hundred fifty-five million, five hundred fifteen thousand, three hundred sixty-six".