939662681 has 8 divisors (see below), whose sum is σ = 961286400. Its totient is φ = 918107008.

The previous prime is 939662663. The next prime is 939662699. The reversal of 939662681 is 186266939.

It is an interprime number because it is at equal distance from previous prime (939662663) and next prime (939662699).

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 939662681 - 2²⁶ = 872553817 is a prime.

It is a super-2 number, since 2×939662681² = 1765931908128215522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939662881) 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, 11465 + ... + 44841.

It is an arithmetic number, because the mean of its divisors is an integer number (120160800).

Almost surely, 2^939662681 is an apocalyptic number.

It is an amenable number.

939662681 is a deficient number, since it is larger than the sum of its proper divisors (21623719).

939662681 is a wasteful number, since it uses less digits than its factorization.

939662681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34023.

The product of its digits is 839808, while the sum is 50.

The square root of 939662681 is about 30653.9178735769. The cubic root of 939662681 is about 979.4689198717.

The spelling of 939662681 in words is "nine hundred thirty-nine million, six hundred sixty-two thousand, six hundred eighty-one".