68949579 has 4 divisors (see below), whose sum is σ = 91932776. Its totient is φ = 45966384.

The previous prime is 68949563. The next prime is 68949589. The reversal of 68949579 is 97594986.

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

It is not a de Polignac number, because 68949579 - 2⁴ = 68949563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68949589) 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 3 ways as a sum of consecutive naturals, for example, 11491594 + ... + 11491599.

It is an arithmetic number, because the mean of its divisors is an integer number (22983194).

Almost surely, 2^68949579 is an apocalyptic number.

68949579 is a deficient number, since it is larger than the sum of its proper divisors (22983197).

68949579 is a wasteful number, since it uses less digits than its factorization.

68949579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22983196.

The product of its digits is 4898880, while the sum is 57.

The square root of 68949579 is about 8303.5883207201. The cubic root of 68949579 is about 410.0566628013.

The spelling of 68949579 in words is "sixty-eight million, nine hundred forty-nine thousand, five hundred seventy-nine".