68375613 has 4 divisors (see below), whose sum is σ = 91167488. Its totient is φ = 45583740.

The previous prime is 68375611. The next prime is 68375617. The reversal of 68375613 is 31657386.

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 not a de Polignac number, because 68375613 - 2¹ = 68375611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68375611) 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, 11395933 + ... + 11395938.

It is an arithmetic number, because the mean of its divisors is an integer number (22791872).

Almost surely, 2^68375613 is an apocalyptic number.

It is an amenable number.

68375613 is a deficient number, since it is larger than the sum of its proper divisors (22791875).

68375613 is a wasteful number, since it uses less digits than its factorization.

68375613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22791874.

The product of its digits is 90720, while the sum is 39.

The square root of 68375613 is about 8268.9547707071. The cubic root of 68375613 is about 408.9156614179.

The spelling of 68375613 in words is "sixty-eight million, three hundred seventy-five thousand, six hundred thirteen".