667667837376 has 84 divisors (see below), whose sum is σ = 1914531629400. Its totient is φ = 222464967168.

The previous prime is 667667837323. The next prime is 667667837393. The reversal of 667667837376 is 673738766766.

667667837376 is a `hidden beast` number, since 6 + 67 + 66 + 78 + 373 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1180690 + ... + 1652078.

Almost surely, 2^667667837376 is an apocalyptic number.

It is an amenable number.

667667837376 is an abundant number, since it is smaller than the sum of its proper divisors (1246863792024).

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

667667837376 is a wasteful number, since it uses less digits than its factorization.

667667837376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473866 (or 473853 counting only the distinct ones).

The product of its digits is 1344252672, while the sum is 72.

The spelling of 667667837376 in words is "six hundred sixty-seven billion, six hundred sixty-seven million, eight hundred thirty-seven thousand, three hundred seventy-six".