68624593 has 4 divisors (see below), whose sum is σ = 68658928. Its totient is φ = 68590260.

The previous prime is 68624587. The next prime is 68624609. The reversal of 68624593 is 39542686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68624593 - 2⁹ = 68624081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68624503) 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, 13971 + ... + 18232.

It is an arithmetic number, because the mean of its divisors is an integer number (17164732).

Almost surely, 2^68624593 is an apocalyptic number.

It is an amenable number.

68624593 is a deficient number, since it is larger than the sum of its proper divisors (34335).

68624593 is a wasteful number, since it uses less digits than its factorization.

68624593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34334.

The product of its digits is 311040, while the sum is 43.

The square root of 68624593 is about 8283.9961974883. The cubic root of 68624593 is about 409.4113961231.

The spelling of 68624593 in words is "sixty-eight million, six hundred twenty-four thousand, five hundred ninety-three".