328645737 has 12 divisors (see below), whose sum is σ = 542526400. Its totient is φ = 187797528.

The previous prime is 328645711. The next prime is 328645741. The reversal of 328645737 is 737546823.

It is not a de Polignac number, because 328645737 - 2¹⁵ = 328612969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328645692 and 328645701.

It is not an unprimeable number, because it can be changed into a prime (328645747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2608237 + ... + 2608362.

Almost surely, 2^328645737 is an apocalyptic number.

It is an amenable number.

328645737 is a deficient number, since it is larger than the sum of its proper divisors (213880663).

328645737 is a wasteful number, since it uses less digits than its factorization.

328645737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216612 (or 5216609 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 328645737 is about 18128.5889412276. The cubic root of 328645737 is about 690.0957208099.

The spelling of 328645737 in words is "three hundred twenty-eight million, six hundred forty-five thousand, seven hundred thirty-seven".