68172824 has 8 divisors (see below), whose sum is σ = 127824060. Its totient is φ = 34086408.

The previous prime is 68172809. The next prime is 68172857. The reversal of 68172824 is 42827186.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260794 + ... + 4260809.

Almost surely, 2^68172824 is an apocalyptic number.

It is an amenable number.

68172824 is a deficient number, since it is larger than the sum of its proper divisors (59651236).

68172824 is a wasteful number, since it uses less digits than its factorization.

68172824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8521609 (or 8521605 counting only the distinct ones).

The product of its digits is 43008, while the sum is 38.

The square root of 68172824 is about 8256.6835957302. The cubic root of 68172824 is about 408.5110058774.

The spelling of 68172824 in words is "sixty-eight million, one hundred seventy-two thousand, eight hundred twenty-four".