68914813 has 4 divisors (see below), whose sum is σ = 75179808. Its totient is φ = 62649820.

The previous prime is 68914799. The next prime is 68914823. The reversal of 68914813 is 31841986.

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 a de Polignac number, because none of the positive numbers 2^k-68914813 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68914823) 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, 3132481 + ... + 3132502.

It is an arithmetic number, because the mean of its divisors is an integer number (18794952).

Almost surely, 2^68914813 is an apocalyptic number.

It is an amenable number.

68914813 is a deficient number, since it is larger than the sum of its proper divisors (6264995).

68914813 is a wasteful number, since it uses less digits than its factorization.

68914813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6264994.

The product of its digits is 41472, while the sum is 40.

The square root of 68914813 is about 8301.4946244637. The cubic root of 68914813 is about 409.9877311419.

The spelling of 68914813 in words is "sixty-eight million, nine hundred fourteen thousand, eight hundred thirteen".