165745487 has 2 divisors, whose sum is σ = 165745488. Its totient is φ = 165745486.

The previous prime is 165745441. The next prime is 165745507. The reversal of 165745487 is 784547561.

165745487 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 165745487 - 2¹⁴ = 165729103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165745187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82872743 + 82872744.

It is an arithmetic number, because the mean of its divisors is an integer number (82872744).

Almost surely, 2^165745487 is an apocalyptic number.

165745487 is a deficient number, since it is larger than the sum of its proper divisors (1).

165745487 is an equidigital number, since it uses as much as digits as its factorization.

165745487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940800, while the sum is 47.

The square root of 165745487 is about 12874.2179179941. The cubic root of 165745487 is about 549.3054450294.

The spelling of 165745487 in words is "one hundred sixty-five million, seven hundred forty-five thousand, four hundred eighty-seven".