667413756 has 60 divisors (see below), whose sum is σ = 1801060800. Its totient is φ = 215291520.

The previous prime is 667413737. The next prime is 667413781. The reversal of 667413756 is 657314766.

It is a super-2 number, since 2×667413756² = 890882243396055072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23181 + ... + 43268.

It is an arithmetic number, because the mean of its divisors is an integer number (30017680).

Almost surely, 2^667413756 is an apocalyptic number.

It is an amenable number.

667413756 is an abundant number, since it is smaller than the sum of its proper divisors (1133647044).

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

667413756 is a wasteful number, since it uses less digits than its factorization.

667413756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66496 (or 66485 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 667413756 is about 25834.3522465728. The cubic root of 667413756 is about 873.9066642400.

The spelling of 667413756 in words is "six hundred sixty-seven million, four hundred thirteen thousand, seven hundred fifty-six".