68563944 has 24 divisors (see below), whose sum is σ = 185694210. Its totient is φ = 22854624.

The previous prime is 68563933. The next prime is 68563949. The reversal of 68563944 is 44936586.

68563944 is a `hidden beast` number, since 6 + 8 + 5 + 639 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60372900 + 8191044 = 7770^2 + 2862^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 68563944.

It is not an unprimeable number, because it can be changed into a prime (68563949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 476067 + ... + 476210.

Almost surely, 2^68563944 is an apocalyptic number.

It is an amenable number.

68563944 is an abundant number, since it is smaller than the sum of its proper divisors (117130266).

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

68563944 is a wasteful number, since it uses less digits than its factorization.

68563944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952289 (or 952282 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 68563944 is about 8280.3347758409. The cubic root of 68563944 is about 409.2907507920.

The spelling of 68563944 in words is "sixty-eight million, five hundred sixty-three thousand, nine hundred forty-four".