68964813 has 24 divisors (see below), whose sum is σ = 108482400. Its totient is φ = 42051744.

The previous prime is 68964803. The next prime is 68964827. The reversal of 68964813 is 31846986.

It is not a de Polignac number, because 68964813 - 2¹⁰ = 68963789 is a prime.

It is a super-2 number, since 2×68964813² = 9512290864249938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68964803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1995 + ... + 11912.

It is an arithmetic number, because the mean of its divisors is an integer number (4520100).

Almost surely, 2^68964813 is an apocalyptic number.

It is an amenable number.

68964813 is a deficient number, since it is larger than the sum of its proper divisors (39517587).

68964813 is a wasteful number, since it uses less digits than its factorization.

68964813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13961 (or 13958 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 68964813 is about 8304.5055843199. The cubic root of 68964813 is about 410.0868604389.

The spelling of 68964813 in words is "sixty-eight million, nine hundred sixty-four thousand, eight hundred thirteen".