152665643 has 6 divisors (see below), whose sum is σ = 165312684. Its totient is φ = 140921976.

The previous prime is 152665619. The next prime is 152665649. The reversal of 152665643 is 346566251.

It is a happy number.

It is not a de Polignac number, because 152665643 - 2²⁴ = 135888427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152665597 and 152665606.

It is not an unprimeable number, because it can be changed into a prime (152665649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 451505 + ... + 451842.

It is an arithmetic number, because the mean of its divisors is an integer number (27552114).

Almost surely, 2^152665643 is an apocalyptic number.

152665643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

152665643 is a deficient number, since it is larger than the sum of its proper divisors (12647041).

152665643 is an equidigital number, since it uses as much as digits as its factorization.

152665643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903373 (or 903360 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 152665643 is about 12355.7939040759. The cubic root of 152665643 is about 534.4582316601.

The spelling of 152665643 in words is "one hundred fifty-two million, six hundred sixty-five thousand, six hundred forty-three".