68152644 has 48 divisors (see below), whose sum is σ = 201936000. Its totient is φ = 19471968.

The previous prime is 68152633. The next prime is 68152649. The reversal of 68152644 is 44625186.

68152644 is a `hidden beast` number, since 6 + 8 + 1 + 5 + 2 + 644 = 666.

It is a super-3 number, since 3×68152644³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 68152599 and 68152608.

It is not an unprimeable number, because it can be changed into a prime (68152649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44319 + ... + 45830.

It is an arithmetic number, because the mean of its divisors is an integer number (4207000).

Almost surely, 2^68152644 is an apocalyptic number.

It is an amenable number.

68152644 is an abundant number, since it is smaller than the sum of its proper divisors (133783356).

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

68152644 is a wasteful number, since it uses less digits than its factorization.

68152644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90169 (or 90161 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 68152644 is about 8255.4614649939. The cubic root of 68152644 is about 408.4706937942.

The spelling of 68152644 in words is "sixty-eight million, one hundred fifty-two thousand, six hundred forty-four".