163272645 has 16 divisors (see below), whose sum is σ = 290262720. Its totient is φ = 87078672.

The previous prime is 163272617. The next prime is 163272671. The reversal of 163272645 is 546272361.

163272645 is a `hidden beast` number, since 1 + 6 + 3 + 2 + 7 + 2 + 645 = 666.

It is not a de Polignac number, because 163272645 - 2¹⁵ = 163239877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604579 + ... + 604848.

It is an arithmetic number, because the mean of its divisors is an integer number (18141420).

Almost surely, 2^163272645 is an apocalyptic number.

163272645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163272645 is a deficient number, since it is larger than the sum of its proper divisors (126990075).

163272645 is a wasteful number, since it uses less digits than its factorization.

163272645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209441 (or 1209435 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 163272645 is about 12777.8184757806. The cubic root of 163272645 is about 546.5599556649.

The spelling of 163272645 in words is "one hundred sixty-three million, two hundred seventy-two thousand, six hundred forty-five".