667487232 has 264 divisors, whose sum is σ = 2084599296. Its totient is φ = 205185024.

The previous prime is 667487231. The next prime is 667487243. The reversal of 667487232 is 232784766.

It is not an unprimeable number, because it can be changed into a prime (667487231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9962463 + ... + 9962529.

Almost surely, 2^667487232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667487232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042299648).

667487232 is an abundant number, since it is smaller than the sum of its proper divisors (1417112064).

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

667487232 is a wasteful number, since it uses less digits than its factorization.

667487232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 142 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 667487232 is about 25835.7742674765. The cubic root of 667487232 is about 873.9387327080.

The spelling of 667487232 in words is "six hundred sixty-seven million, four hundred eighty-seven thousand, two hundred thirty-two".