625690986 has 16 divisors (see below), whose sum is σ = 1260386400. Its totient is φ = 207062928.

The previous prime is 625690973. The next prime is 625690987. The reversal of 625690986 is 689096526.

It is not an unprimeable number, because it can be changed into a prime (625690987) 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, 374281 + ... + 375948.

It is an arithmetic number, because the mean of its divisors is an integer number (78774150).

Almost surely, 2^625690986 is an apocalyptic number.

625690986 is an abundant number, since it is smaller than the sum of its proper divisors (634695414).

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

625690986 is a wasteful number, since it uses less digits than its factorization.

625690986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750373.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 625690986 is about 25013.8159024168. The cubic root of 625690986 is about 855.3029424764.

The spelling of 625690986 in words is "six hundred twenty-five million, six hundred ninety thousand, nine hundred eighty-six".