172064999 has 2 divisors, whose sum is σ = 172065000. Its totient is φ = 172064998.

The previous prime is 172064993. The next prime is 172065029. The reversal of 172064999 is 999460271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172064999 - 2⁴ = 172064983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172064993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86032499 + 86032500.

It is an arithmetic number, because the mean of its divisors is an integer number (86032500).

Almost surely, 2^172064999 is an apocalyptic number.

172064999 is a deficient number, since it is larger than the sum of its proper divisors (1).

172064999 is an equidigital number, since it uses as much as digits as its factorization.

172064999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 172064999 is about 13117.3548781757. The cubic root of 172064999 is about 556.1998218592.

The spelling of 172064999 in words is "one hundred seventy-two million, sixty-four thousand, nine hundred ninety-nine".