667442832 has 40 divisors (see below), whose sum is σ = 1970546496. Its totient is φ = 190697856.

The previous prime is 667442827. The next prime is 667442851. The reversal of 667442832 is 238244766.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992883 + ... + 993554.

Almost surely, 2^667442832 is an apocalyptic number.

It is an amenable number.

667442832 is an abundant number, since it is smaller than the sum of its proper divisors (1303103664).

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

667442832 is a wasteful number, since it uses less digits than its factorization.

667442832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986455 (or 1986449 counting only the distinct ones).

The product of its digits is 387072, while the sum is 42.

The square root of 667442832 is about 25834.9149795388. The cubic root of 667442832 is about 873.9193546893.

The spelling of 667442832 in words is "six hundred sixty-seven million, four hundred forty-two thousand, eight hundred thirty-two".