164326651 has 4 divisors (see below), whose sum is σ = 171471312. Its totient is φ = 157181992.

The previous prime is 164326627. The next prime is 164326667. The reversal of 164326651 is 156623461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164326651 - 2¹³ = 164318459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164356651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3572296 + ... + 3572341.

It is an arithmetic number, because the mean of its divisors is an integer number (42867828).

Almost surely, 2^164326651 is an apocalyptic number.

164326651 is a deficient number, since it is larger than the sum of its proper divisors (7144661).

164326651 is an equidigital number, since it uses as much as digits as its factorization.

164326651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144660.

The product of its digits is 25920, while the sum is 34.

The square root of 164326651 is about 12818.9957094930. The cubic root of 164326651 is about 547.7335392277.

The spelling of 164326651 in words is "one hundred sixty-four million, three hundred twenty-six thousand, six hundred fifty-one".