667407372 has 24 divisors (see below), whose sum is σ = 1557729600. Its totient is φ = 222405456.

The previous prime is 667407371. The next prime is 667407373. The reversal of 667407372 is 273704766.

667407372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (667407371) and next prime (667407373).

It is not an unprimeable number, because it can be changed into a prime (667407371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56779 + ... + 67517.

It is an arithmetic number, because the mean of its divisors is an integer number (64905400).

Almost surely, 2^667407372 is an apocalyptic number.

It is an amenable number.

667407372 is an abundant number, since it is smaller than the sum of its proper divisors (890322228).

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

667407372 is a wasteful number, since it uses less digits than its factorization.

667407372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15925 (or 15923 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 42.

The square root of 667407372 is about 25834.2286898603. The cubic root of 667407372 is about 873.9038778436.

The spelling of 667407372 in words is "six hundred sixty-seven million, four hundred seven thousand, three hundred seventy-two".