68512984 has 8 divisors (see below), whose sum is σ = 128461860. Its totient is φ = 34256488.

The previous prime is 68512973. The next prime is 68512999. The reversal of 68512984 is 48921586.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 68512984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4282054 + ... + 4282069.

Almost surely, 2^68512984 is an apocalyptic number.

It is an amenable number.

68512984 is a deficient number, since it is larger than the sum of its proper divisors (59948876).

68512984 is a wasteful number, since it uses less digits than its factorization.

68512984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8564129 (or 8564125 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 68512984 is about 8277.2570335830. The cubic root of 68512984 is about 409.1893241772.

It can be divided in two parts, 68512 and 984, that added together give a palindrome (69496).

The spelling of 68512984 in words is "sixty-eight million, five hundred twelve thousand, nine hundred eighty-four".