657130260 has 48 divisors (see below), whose sum is σ = 1849530816. Its totient is φ = 174323712.

The previous prime is 657130241. The next prime is 657130277. The reversal of 657130260 is 62031756.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16794 + ... + 39953.

It is an arithmetic number, because the mean of its divisors is an integer number (38531892).

Almost surely, 2^657130260 is an apocalyptic number.

657130260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

657130260 is an abundant number, since it is smaller than the sum of its proper divisors (1192400556).

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

657130260 is a wasteful number, since it uses less digits than its factorization.

657130260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56952 (or 56950 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 657130260 is about 25634.5520733248. The cubic root of 657130260 is about 869.3950345732.

The spelling of 657130260 in words is "six hundred fifty-seven million, one hundred thirty thousand, two hundred sixty".