68400713 has 4 divisors (see below), whose sum is σ = 69040080. Its totient is φ = 67761348.

The previous prime is 68400691. The next prime is 68400727. The reversal of 68400713 is 31700486.

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 68400713 - 2¹⁰ = 68399689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68400743) 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, 319523 + ... + 319736.

It is an arithmetic number, because the mean of its divisors is an integer number (17260020).

Almost surely, 2^68400713 is an apocalyptic number.

It is an amenable number.

68400713 is a deficient number, since it is larger than the sum of its proper divisors (639367).

68400713 is a wasteful number, since it uses less digits than its factorization.

68400713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639366.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 68400713 is about 8270.4723565223. The cubic root of 68400713 is about 408.9656915724.

The spelling of 68400713 in words is "sixty-eight million, four hundred thousand, seven hundred thirteen".