994734657 has 24 divisors (see below), whose sum is σ = 1649359296. Its totient is φ = 565907616.

The previous prime is 994734623. The next prime is 994734667. The reversal of 994734657 is 756437499.

It is a happy number.

It is not a de Polignac number, because 994734657 - 2⁸ = 994734401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (994734667) 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, 20478 + ... + 49079.

It is an arithmetic number, because the mean of its divisors is an integer number (68723304).

Almost surely, 2^994734657 is an apocalyptic number.

It is an amenable number.

994734657 is a deficient number, since it is larger than the sum of its proper divisors (654624639).

994734657 is a wasteful number, since it uses less digits than its factorization.

994734657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69797 (or 69794 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 994734657 is about 31539.4143414237. The cubic root of 994734657 is about 998.2417961978.

The spelling of 994734657 in words is "nine hundred ninety-four million, seven hundred thirty-four thousand, six hundred fifty-seven".