165260633 has 2 divisors, whose sum is σ = 165260634. Its totient is φ = 165260632.

The previous prime is 165260581. The next prime is 165260639. The reversal of 165260633 is 336062561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162613504 + 2647129 = 12752^2 + 1627^2 .

It is a cyclic number.

It is not a de Polignac number, because 165260633 - 2⁸ = 165260377 is a prime.

It is a super-2 number, since 2×165260633² = 54622153639121378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165260633.

It is not a weakly prime, because it can be changed into another prime (165260639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82630316 + 82630317.

It is an arithmetic number, because the mean of its divisors is an integer number (82630317).

Almost surely, 2^165260633 is an apocalyptic number.

It is an amenable number.

165260633 is a deficient number, since it is larger than the sum of its proper divisors (1).

165260633 is an equidigital number, since it uses as much as digits as its factorization.

165260633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 165260633 is about 12855.3737012971. The cubic root of 165260633 is about 548.7692955580.

The spelling of 165260633 in words is "one hundred sixty-five million, two hundred sixty thousand, six hundred thirty-three".