68687544 has 32 divisors (see below), whose sum is σ = 177642000. Its totient is φ = 22106112.

The previous prime is 68687533. The next prime is 68687551. The reversal of 68687544 is 44578686.

It is a junction number, because it is equal to n+sod(n) for n = 68687493 and 68687502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48649 + ... + 50040.

Almost surely, 2^68687544 is an apocalyptic number.

It is an amenable number.

68687544 is an abundant number, since it is smaller than the sum of its proper divisors (108954456).

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

68687544 is a wasteful number, since it uses less digits than its factorization.

68687544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98727 (or 98723 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 68687544 is about 8287.7948816317. The cubic root of 68687544 is about 409.5365455241.

The spelling of 68687544 in words is "sixty-eight million, six hundred eighty-seven thousand, five hundred forty-four".