667436670 has 24 divisors (see below), whose sum is σ = 1735335576. Its totient is φ = 177983088.

The previous prime is 667436639. The next prime is 667436683. The reversal of 667436670 is 76634766.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3707892 + ... + 3708071.

It is an arithmetic number, because the mean of its divisors is an integer number (72305649).

Almost surely, 2^667436670 is an apocalyptic number.

667436670 is an abundant number, since it is smaller than the sum of its proper divisors (1067898906).

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

667436670 is a wasteful number, since it uses less digits than its factorization.

667436670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7415976 (or 7415973 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The square root of 667436670 is about 25834.7957220490. The cubic root of 667436670 is about 873.9166652666.

The spelling of 667436670 in words is "six hundred sixty-seven million, four hundred thirty-six thousand, six hundred seventy".