68345624 has 16 divisors (see below), whose sum is σ = 128290200. Its totient is φ = 34134912.

The previous prime is 68345621. The next prime is 68345633. The reversal of 68345624 is 42654386.

It is a super-2 number, since 2×68345624² = 9342248639898752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68345621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3839 + ... + 12305.

Almost surely, 2^68345624 is an apocalyptic number.

It is an amenable number.

68345624 is a deficient number, since it is larger than the sum of its proper divisors (59944576).

68345624 is a wasteful number, since it uses less digits than its factorization.

68345624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9482 (or 9478 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 68345624 is about 8267.1412229380. The cubic root of 68345624 is about 408.8558702902.

Subtracting from 68345624 its sum of digits (38), we obtain a triangular number (68345586 = T₁₁₆₉₁).

The spelling of 68345624 in words is "sixty-eight million, three hundred forty-five thousand, six hundred twenty-four".