164210665 has 16 divisors (see below), whose sum is σ = 199454400. Its totient is φ = 129778240.

The previous prime is 164210659. The next prime is 164210671. The reversal of 164210665 is 566012461.

It is an interprime number because it is at equal distance from previous prime (164210659) and next prime (164210671).

It is not a de Polignac number, because 164210665 - 2¹¹ = 164208617 is a prime.

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, 168630 + ... + 169600.

It is an arithmetic number, because the mean of its divisors is an integer number (12465900).

Almost surely, 2^164210665 is an apocalyptic number.

It is an amenable number.

164210665 is a deficient number, since it is larger than the sum of its proper divisors (35243735).

164210665 is a wasteful number, since it uses less digits than its factorization.

164210665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 164210665 is about 12814.4709215792. The cubic root of 164210665 is about 547.6046407306.

The spelling of 164210665 in words is "one hundred sixty-four million, two hundred ten thousand, six hundred sixty-five".