68964399 has 16 divisors (see below), whose sum is σ = 116765440. Its totient is φ = 39408120.

The previous prime is 68964391. The next prime is 68964403. The reversal of 68964399 is 99346986.

It is a happy number.

It is not a de Polignac number, because 68964399 - 2³ = 68964391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68964391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182257 + ... + 182634.

It is an arithmetic number, because the mean of its divisors is an integer number (7297840).

Almost surely, 2^68964399 is an apocalyptic number.

68964399 is a deficient number, since it is larger than the sum of its proper divisors (47801041).

68964399 is a wasteful number, since it uses less digits than its factorization.

68964399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364907 (or 364901 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 68964399 is about 8304.4806580544. The cubic root of 68964399 is about 410.0860398450.

The spelling of 68964399 in words is "sixty-eight million, nine hundred sixty-four thousand, three hundred ninety-nine".