68437624 has 8 divisors (see below), whose sum is σ = 128320560. Its totient is φ = 34218808.

The previous prime is 68437609. The next prime is 68437661. The reversal of 68437624 is 42673486.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4277344 + ... + 4277359.

It is an arithmetic number, because the mean of its divisors is an integer number (16040070).

Almost surely, 2^68437624 is an apocalyptic number.

It is an amenable number.

68437624 is a deficient number, since it is larger than the sum of its proper divisors (59882936).

68437624 is a wasteful number, since it uses less digits than its factorization.

68437624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8554709 (or 8554705 counting only the distinct ones).

The product of its digits is 193536, while the sum is 40.

The square root of 68437624 is about 8272.7035484175. The cubic root of 68437624 is about 409.0392415765.

The spelling of 68437624 in words is "sixty-eight million, four hundred thirty-seven thousand, six hundred twenty-four".