686588130 has 32 divisors (see below), whose sum is σ = 1830902400. Its totient is φ = 183090096.

The previous prime is 686588107. The next prime is 686588153. The reversal of 686588130 is 31885686.

686588130 is a `hidden beast` number, since 68 + 6 + 588 + 1 + 3 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (686588107) and next prime (686588153).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1271190 + ... + 1271729.

It is an arithmetic number, because the mean of its divisors is an integer number (57215700).

Almost surely, 2^686588130 is an apocalyptic number.

686588130 is an abundant number, since it is smaller than the sum of its proper divisors (1144314270).

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

686588130 is a wasteful number, since it uses less digits than its factorization.

686588130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542935 (or 2542929 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 686588130 is about 26202.8267559056. The cubic root of 686588130 is about 882.1967028541.

The spelling of 686588130 in words is "six hundred eighty-six million, five hundred eighty-eight thousand, one hundred thirty".