68644824 has 32 divisors (see below), whose sum is σ = 175800240. Its totient is φ = 22323200.

The previous prime is 68644799. The next prime is 68644831. The reversal of 68644824 is 42844686.

It is a super-2 number, since 2×68644824² = 9424223723981952, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33897 + ... + 35864.

Almost surely, 2^68644824 is an apocalyptic number.

It is an amenable number.

68644824 is an abundant number, since it is smaller than the sum of its proper divisors (107155416).

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

68644824 is a wasteful number, since it uses less digits than its factorization.

68644824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69811 (or 69807 counting only the distinct ones).

The product of its digits is 294912, while the sum is 42.

The square root of 68644824 is about 8285.2171969116. The cubic root of 68644824 is about 409.4516245979.

The spelling of 68644824 in words is "sixty-eight million, six hundred forty-four thousand, eight hundred twenty-four".