165020670 has 48 divisors (see below), whose sum is σ = 439042032. Its totient is φ = 42981120.

The previous prime is 165020623. The next prime is 165020741. The reversal of 165020670 is 76020561.

165020670 is a `hidden beast` number, since 1 + 650 + 2 + 0 + 6 + 7 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17451 + ... + 25190.

It is an arithmetic number, because the mean of its divisors is an integer number (9146709).

Almost surely, 2^165020670 is an apocalyptic number.

165020670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165020670 is an abundant number, since it is smaller than the sum of its proper divisors (274021362).

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

165020670 is a wasteful number, since it uses less digits than its factorization.

165020670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42697 (or 42694 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 165020670 is about 12846.0371321276. The cubic root of 165020670 is about 548.5035575095.

The spelling of 165020670 in words is "one hundred sixty-five million, twenty thousand, six hundred seventy".