164661355 has 16 divisors (see below), whose sum is σ = 200972160. Its totient is φ = 129489408.

The previous prime is 164661331. The next prime is 164661361. The reversal of 164661355 is 553166461.

It is a cyclic number.

It is not a de Polignac number, because 164661355 - 2¹¹ = 164659307 is a prime.

It is a super-2 number, since 2×164661355² = 54226723660872050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148734 + ... + 149836.

It is an arithmetic number, because the mean of its divisors is an integer number (12560760).

Almost surely, 2^164661355 is an apocalyptic number.

164661355 is a deficient number, since it is larger than the sum of its proper divisors (36310805).

164661355 is a wasteful number, since it uses less digits than its factorization.

164661355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its digits is 64800, while the sum is 37.

The square root of 164661355 is about 12832.0440694380. The cubic root of 164661355 is about 548.1051654508.

It can be divided in two parts, 1646 and 61355, that added together give a square (63001 = 251²).

The spelling of 164661355 in words is "one hundred sixty-four million, six hundred sixty-one thousand, three hundred fifty-five".