68990672 has 20 divisors (see below), whose sum is σ = 140705280. Its totient is φ = 32679648.

The previous prime is 68990651. The next prime is 68990687. The reversal of 68990672 is 27609986.

It is a super-3 number, since 3×68990672³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113168 + ... + 113775.

It is an arithmetic number, because the mean of its divisors is an integer number (7035264).

Almost surely, 2^68990672 is an apocalyptic number.

It is an amenable number.

68990672 is an abundant number, since it is smaller than the sum of its proper divisors (71714608).

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

68990672 is a wasteful number, since it uses less digits than its factorization.

68990672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226970 (or 226964 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 68990672 is about 8306.0623643216. The cubic root of 68990672 is about 410.1381093320.

The spelling of 68990672 in words is "sixty-eight million, nine hundred ninety thousand, six hundred seventy-two".