67699876864 has 99 divisors (see below), whose sum is σ = 139078238137. Its totient is φ = 32938225664.

The previous prime is 67699876831. The next prime is 67699876873. The reversal of 67699876864 is 46867899676.

The square root of 67699876864 is 260192.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 61583385600 + 6116491264 = 248160^2 + 78208^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 391328682 + ... + 391328854.

Almost surely, 2^67699876864 is an apocalyptic number.

67699876864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

67699876864 is the 260192-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67699876864

67699876864 is an abundant number, since it is smaller than the sum of its proper divisors (71378361273).

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

67699876864 is an frugal number, since it uses more digits than its factorization.

67699876864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 222 counting only the distinct ones).

The product of its digits is 1316818944, while the sum is 76.

The spelling of 67699876864 in words is "sixty-seven billion, six hundred ninety-nine million, eight hundred seventy-six thousand, eight hundred sixty-four".