68623648 has 12 divisors (see below), whose sum is σ = 135102870. Its totient is φ = 34311808.

The previous prime is 68623637. The next prime is 68623661. The reversal of 68623648 is 84632686.

It can be written as a sum of positive squares in only one way, i.e., 47720464 + 20903184 = 6908^2 + 4572^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072213 + ... + 1072276.

Almost surely, 2^68623648 is an apocalyptic number.

It is an amenable number.

68623648 is a deficient number, since it is larger than the sum of its proper divisors (66479222).

68623648 is a wasteful number, since it uses less digits than its factorization.

68623648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144499 (or 2144491 counting only the distinct ones).

The product of its digits is 331776, while the sum is 43.

The square root of 68623648 is about 8283.9391596028. The cubic root of 68623648 is about 409.4095168379.

The spelling of 68623648 in words is "sixty-eight million, six hundred twenty-three thousand, six hundred forty-eight".