68264513 has 4 divisors (see below), whose sum is σ = 69031620. Its totient is φ = 67497408.

The previous prime is 68264489. The next prime is 68264531. The reversal of 68264513 is 31546286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28976689 + 39287824 = 5383^2 + 6268^2 .

It is a cyclic number.

It is not a de Polignac number, because 68264513 - 2¹² = 68260417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68264113) 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, 383420 + ... + 383597.

It is an arithmetic number, because the mean of its divisors is an integer number (17257905).

Almost surely, 2^68264513 is an apocalyptic number.

It is an amenable number.

68264513 is a deficient number, since it is larger than the sum of its proper divisors (767107).

68264513 is an equidigital number, since it uses as much as digits as its factorization.

68264513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767106.

The product of its digits is 34560, while the sum is 35.

The square root of 68264513 is about 8262.2341409573. The cubic root of 68264513 is about 408.6940660463.

The spelling of 68264513 in words is "sixty-eight million, two hundred sixty-four thousand, five hundred thirteen".