667020324 has 12 divisors (see below), whose sum is σ = 1556380784. Its totient is φ = 222340104.

The previous prime is 667020307. The next prime is 667020331. The reversal of 667020324 is 423020766.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×667020324² = 889832225258129952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 667020291 and 667020300.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27792502 + ... + 27792525.

Almost surely, 2^667020324 is an apocalyptic number.

It is an amenable number.

667020324 is an abundant number, since it is smaller than the sum of its proper divisors (889360460).

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

667020324 is a wasteful number, since it uses less digits than its factorization.

667020324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55585034 (or 55585032 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 667020324 is about 25826.7366115040. The cubic root of 667020324 is about 873.7349114977.

The spelling of 667020324 in words is "six hundred sixty-seven million, twenty thousand, three hundred twenty-four".