165214636 has 12 divisors (see below), whose sum is σ = 306133128. Its totient is φ = 77748032.

The previous prime is 165214631. The next prime is 165214639. The reversal of 165214636 is 636412561.

It is a super-2 number, since 2×165214636² = 54591751897224992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (165214631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214746 + ... + 1214881.

It is an arithmetic number, because the mean of its divisors is an integer number (25511094).

Almost surely, 2^165214636 is an apocalyptic number.

It is an amenable number.

165214636 is a deficient number, since it is larger than the sum of its proper divisors (140918492).

165214636 is a wasteful number, since it uses less digits than its factorization.

165214636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429648 (or 2429646 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 165214636 is about 12853.5845584024. The cubic root of 165214636 is about 548.7183778389.

The spelling of 165214636 in words is "one hundred sixty-five million, two hundred fourteen thousand, six hundred thirty-six".