68825813 has 12 divisors (see below), whose sum is σ = 80385312. Its totient is φ = 57725400.

The previous prime is 68825791. The next prime is 68825819. The reversal of 68825813 is 31852886.

It is not a de Polignac number, because 68825813 - 2⁶ = 68825749 is a prime.

It is a super-2 number, since 2×68825813² = 9473985070221938, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68825819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13238 + ... + 17688.

It is an arithmetic number, because the mean of its divisors is an integer number (6698776).

Almost surely, 2^68825813 is an apocalyptic number.

It is an amenable number.

68825813 is a deficient number, since it is larger than the sum of its proper divisors (11559499).

68825813 is an equidigital number, since it uses as much as digits as its factorization.

68825813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4552 (or 4505 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 68825813 is about 8296.1324121545. The cubic root of 68825813 is about 409.8111622949.

The spelling of 68825813 in words is "sixty-eight million, eight hundred twenty-five thousand, eight hundred thirteen".