68624 has 10 divisors (see below), whose sum is σ = 132990. Its totient is φ = 34304.

The previous prime is 68611. The next prime is 68633. The reversal of 68624 is 42686.

It can be written as a sum of positive squares in only one way, i.e., 67600 + 1024 = 260^2 + 32^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68593 and 68602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2129 + ... + 2160.

It is an arithmetic number, because the mean of its divisors is an integer number (13299).

2⁶⁸⁶²⁴ is an apocalyptic number.

It is an amenable number.

68624 is a deficient number, since it is larger than the sum of its proper divisors (64366).

68624 is a wasteful number, since it uses less digits than its factorization.

68624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297 (or 4291 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 68624 is about 261.9618292805. The cubic root of 68624 is about 40.9410216849.

The spelling of 68624 in words is "sixty-eight thousand, six hundred twenty-four".