162121660 has 12 divisors (see below), whose sum is σ = 340455528. Its totient is φ = 64848656.

The previous prime is 162121651. The next prime is 162121693. The reversal of 162121660 is 66121261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4053022 + ... + 4053061.

It is an arithmetic number, because the mean of its divisors is an integer number (28371294).

Almost surely, 2^162121660 is an apocalyptic number.

162121660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162121660 is an abundant number, since it is smaller than the sum of its proper divisors (178333868).

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

162121660 is a wasteful number, since it uses less digits than its factorization.

162121660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8106092 (or 8106090 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 162121660 is about 12732.7004205706. The cubic root of 162121660 is about 545.2726072162.

The spelling of 162121660 in words is "one hundred sixty-two million, one hundred twenty-one thousand, six hundred sixty".