667400800740 has 24 divisors (see below), whose sum is σ = 1868722242240. Its totient is φ = 177973546848.

The previous prime is 667400800699. The next prime is 667400800811. The reversal of 667400800740 is 47008004766.

It is a junction number, because it is equal to n+sod(n) for n = 667400800692 and 667400800701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5561673280 + ... + 5561673399.

It is an arithmetic number, because the mean of its divisors is an integer number (77863426760).

Almost surely, 2^667400800740 is an apocalyptic number.

667400800740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667400800740 is an abundant number, since it is smaller than the sum of its proper divisors (1201321441500).

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

667400800740 is a wasteful number, since it uses less digits than its factorization.

667400800740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123346691 (or 11123346689 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 667400800740 in words is "six hundred sixty-seven billion, four hundred million, eight hundred thousand, seven hundred forty".