165680479 has 2 divisors, whose sum is σ = 165680480. Its totient is φ = 165680478.

The previous prime is 165680443. The next prime is 165680483. The reversal of 165680479 is 974086561.

165680479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165680479 - 2¹⁹ = 165156191 is a prime.

It is a super-2 number, since 2×165680479² = 54900042243338882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165680429) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82840239 + 82840240.

It is an arithmetic number, because the mean of its divisors is an integer number (82840240).

Almost surely, 2^165680479 is an apocalyptic number.

165680479 is a deficient number, since it is larger than the sum of its proper divisors (1).

165680479 is an equidigital number, since it uses as much as digits as its factorization.

165680479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 165680479 is about 12871.6929344978. The cubic root of 165680479 is about 549.2336202121.

The spelling of 165680479 in words is "one hundred sixty-five million, six hundred eighty thousand, four hundred seventy-nine".