667795000 has 40 divisors (see below), whose sum is σ = 1564655400. Its totient is φ = 267116000.

The previous prime is 667794997. The next prime is 667795001. The reversal of 667795000 is 597766.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667795001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 61780 + ... + 71779.

It is an arithmetic number, because the mean of its divisors is an integer number (39116385).

Almost surely, 2^667795000 is an apocalyptic number.

It is an amenable number.

667795000 is an abundant number, since it is smaller than the sum of its proper divisors (896860400).

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

667795000 is a wasteful number, since it uses less digits than its factorization.

667795000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133585 (or 133566 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 667795000 is about 25841.7298182610. The cubic root of 667795000 is about 874.0730319296.

The spelling of 667795000 in words is "six hundred sixty-seven million, seven hundred ninety-five thousand".