68624984 has 8 divisors (see below), whose sum is σ = 128671860. Its totient is φ = 34312488.

The previous prime is 68624929. The next prime is 68624987. The reversal of 68624984 is 48942686.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68624987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4289054 + ... + 4289069.

Almost surely, 2^68624984 is an apocalyptic number.

It is an amenable number.

68624984 is a deficient number, since it is larger than the sum of its proper divisors (60046876).

68624984 is a wasteful number, since it uses less digits than its factorization.

68624984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8578129 (or 8578125 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 68624984 is about 8284.0197971758. The cubic root of 68624984 is about 409.4121736847.

The spelling of 68624984 in words is "sixty-eight million, six hundred twenty-four thousand, nine hundred eighty-four".