68942739 has 8 divisors (see below), whose sum is σ = 93481920. Its totient is φ = 45182696.

The previous prime is 68942737. The next prime is 68942759. The reversal of 68942739 is 93724986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68942739 - 2¹ = 68942737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68942737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194577 + ... + 194930.

It is an arithmetic number, because the mean of its divisors is an integer number (11685240).

Almost surely, 2^68942739 is an apocalyptic number.

68942739 is a deficient number, since it is larger than the sum of its proper divisors (24539181).

68942739 is a wasteful number, since it uses less digits than its factorization.

68942739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389569.

The product of its digits is 653184, while the sum is 48.

The square root of 68942739 is about 8303.1764403751. The cubic root of 68942739 is about 410.0431027459.

The spelling of 68942739 in words is "sixty-eight million, nine hundred forty-two thousand, seven hundred thirty-nine".