68966739 has 24 divisors (see below), whose sum is σ = 106546752. Its totient is φ = 42835200.

The previous prime is 68966717. The next prime is 68966747. The reversal of 68966739 is 93766986.

It is a happy number.

It is not a de Polignac number, because 68966739 - 2⁵ = 68966707 is a prime.

It is a super-2 number, since 2×68966739² = 9512822176588242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68916739) 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, 13222 + ... + 17684.

It is an arithmetic number, because the mean of its divisors is an integer number (4439448).

Almost surely, 2^68966739 is an apocalyptic number.

68966739 is a deficient number, since it is larger than the sum of its proper divisors (37580013).

68966739 is a wasteful number, since it uses less digits than its factorization.

68966739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4587 (or 4584 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 68966739 is about 8304.6215446581. The cubic root of 68966739 is about 410.0906779409.

The spelling of 68966739 in words is "sixty-eight million, nine hundred sixty-six thousand, seven hundred thirty-nine".