667831739904 has 240 divisors, whose sum is σ = 2213954110368. Its totient is φ = 189838688256.

The previous prime is 667831739893. The next prime is 667831739933. The reversal of 667831739904 is 409937138766.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6301884 + ... + 6406980.

Almost surely, 2^667831739904 is an apocalyptic number.

667831739904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667831739904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1106977055184).

667831739904 is an abundant number, since it is smaller than the sum of its proper divisors (1546122370464).

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

667831739904 is a wasteful number, since it uses less digits than its factorization.

667831739904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105325 (or 105306 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 63.

The spelling of 667831739904 in words is "six hundred sixty-seven billion, eight hundred thirty-one million, seven hundred thirty-nine thousand, nine hundred four".