686430955 has 48 divisors (see below), whose sum is σ = 1015822080. Its totient is φ = 442749888.

The previous prime is 686430949. The next prime is 686430959. The reversal of 686430955 is 559034686.

It is not a de Polignac number, because 686430955 - 2⁷ = 686430827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (686430959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 776944 + ... + 777826.

It is an arithmetic number, because the mean of its divisors is an integer number (21162960).

Almost surely, 2^686430955 is an apocalyptic number.

686430955 is a deficient number, since it is larger than the sum of its proper divisors (329391125).

686430955 is a wasteful number, since it uses less digits than its factorization.

686430955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 686430955 is about 26199.8273849276. The cubic root of 686430955 is about 882.1293796935.

The spelling of 686430955 in words is "six hundred eighty-six million, four hundred thirty thousand, nine hundred fifty-five".