162165566 has 16 divisors (see below), whose sum is σ = 246685824. Its totient is φ = 79941144.

The previous prime is 162165547. The next prime is 162165607. The reversal of 162165566 is 665561261.

It is a super-2 number, since 2×162165566² = 52595341592200712, which contains 22 as substring.

It is a congruent number.

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, 136025 + ... + 137211.

It is an arithmetic number, because the mean of its divisors is an integer number (15417864).

Almost surely, 2^162165566 is an apocalyptic number.

162165566 is a deficient number, since it is larger than the sum of its proper divisors (84520258).

162165566 is a wasteful number, since it uses less digits than its factorization.

162165566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095.

The product of its digits is 64800, while the sum is 38.

The square root of 162165566 is about 12734.4244471433. The cubic root of 162165566 is about 545.3218265868.

The spelling of 162165566 in words is "one hundred sixty-two million, one hundred sixty-five thousand, five hundred sixty-six".