329564634 has 16 divisors (see below), whose sum is σ = 753290688. Its totient is φ = 94161312.

The previous prime is 329564623. The next prime is 329564659. The reversal of 329564634 is 436465923.

It is a super-2 number, since 2×329564634² = 217225695967107912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 7846777 = 329564634 / (3 + 2 + 9 + 5 + 6 + 4 + 6 + 3 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3923347 + ... + 3923430.

It is an arithmetic number, because the mean of its divisors is an integer number (47080668).

Almost surely, 2^329564634 is an apocalyptic number.

329564634 is an abundant number, since it is smaller than the sum of its proper divisors (423726054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

329564634 is a wasteful number, since it uses less digits than its factorization.

329564634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846789.

The product of its digits is 466560, while the sum is 42.

The square root of 329564634 is about 18153.9151149277. The cubic root of 329564634 is about 690.7382939761.

The spelling of 329564634 in words is "three hundred twenty-nine million, five hundred sixty-four thousand, six hundred thirty-four".