329612985 has 48 divisors (see below), whose sum is σ = 636526800. Its totient is φ = 156667392.

The previous prime is 329612971. The next prime is 329612993. The reversal of 329612985 is 589216923.

329612985 is a `hidden beast` number, since 3 + 29 + 612 + 9 + 8 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 108555561 + 221057424 = 10419^2 + 14868^2 .

It is not a de Polignac number, because 329612985 - 2⁸ = 329612729 is a prime.

It is a super-2 number, since 2×329612985² = 217289439761220450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 329612985.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7251 + ... + 26679.

It is an arithmetic number, because the mean of its divisors is an integer number (13260975).

Almost surely, 2^329612985 is an apocalyptic number.

It is an amenable number.

329612985 is a deficient number, since it is larger than the sum of its proper divisors (306913815).

329612985 is a wasteful number, since it uses less digits than its factorization.

329612985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19482 (or 19479 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 329612985 is about 18155.2467622999. The cubic root of 329612985 is about 690.7720721293.

The spelling of 329612985 in words is "three hundred twenty-nine million, six hundred twelve thousand, nine hundred eighty-five".