164686963 has 16 divisors (see below), whose sum is σ = 194201280. Its totient is φ = 136705536.

The previous prime is 164686961. The next prime is 164686979. The reversal of 164686963 is 369686461.

It is a cyclic number.

It is not a de Polignac number, because 164686963 - 2¹ = 164686961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164686961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58983 + ... + 61711.

It is an arithmetic number, because the mean of its divisors is an integer number (12137580).

Almost surely, 2^164686963 is an apocalyptic number.

164686963 is a deficient number, since it is larger than the sum of its proper divisors (29514317).

164686963 is a wasteful number, since it uses less digits than its factorization.

164686963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006.

The product of its digits is 1119744, while the sum is 49.

The square root of 164686963 is about 12833.0418451745. The cubic root of 164686963 is about 548.1335776011.

It can be divided in two parts, 164686 and 963, that added together give a square (165649 = 407²).

The spelling of 164686963 in words is "one hundred sixty-four million, six hundred eighty-six thousand, nine hundred sixty-three".