667774433740 has 24 divisors (see below), whose sum is σ = 1402342370352. Its totient is φ = 267106714560.

The previous prime is 667774433723. The next prime is 667774433831. The reversal of 667774433740 is 47334477766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2575230 + ... + 2822650.

It is an arithmetic number, because the mean of its divisors is an integer number (58430932098).

Almost surely, 2^667774433740 is an apocalyptic number.

It is an amenable number.

667774433740 is an abundant number, since it is smaller than the sum of its proper divisors (734567936612).

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

667774433740 is a wasteful number, since it uses less digits than its factorization.

667774433740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382377 (or 382375 counting only the distinct ones).

The product of its (nonzero) digits is 49787136, while the sum is 58.

The spelling of 667774433740 in words is "six hundred sixty-seven billion, seven hundred seventy-four million, four hundred thirty-three thousand, seven hundred forty".