667484964 has 18 divisors (see below), whose sum is σ = 1687253750. Its totient is φ = 222494976.

The previous prime is 667484941. The next prime is 667484969. The reversal of 667484964 is 469484766.

It can be written as a sum of positive squares in only one way, i.e., 581774400 + 85710564 = 24120^2 + 9258^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 667484964.

It is not an unprimeable number, because it can be changed into a prime (667484969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9270589 + ... + 9270660.

Almost surely, 2^667484964 is an apocalyptic number.

It is an amenable number.

667484964 is an abundant number, since it is smaller than the sum of its proper divisors (1019768786).

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

667484964 is a wasteful number, since it uses less digits than its factorization.

667484964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18541259 (or 18541254 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The square root of 667484964 is about 25835.7303748123. The cubic root of 667484964 is about 873.9377428786.

The spelling of 667484964 in words is "six hundred sixty-seven million, four hundred eighty-four thousand, nine hundred sixty-four".