164785487 has 2 divisors, whose sum is σ = 164785488. Its totient is φ = 164785486.

The previous prime is 164785483. The next prime is 164785513. The reversal of 164785487 is 784587461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164785487 - 2² = 164785483 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 (164785483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82392743 + 82392744.

It is an arithmetic number, because the mean of its divisors is an integer number (82392744).

Almost surely, 2^164785487 is an apocalyptic number.

164785487 is a deficient number, since it is larger than the sum of its proper divisors (1).

164785487 is an equidigital number, since it uses as much as digits as its factorization.

164785487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1505280, while the sum is 50.

The square root of 164785487 is about 12836.8799558148. The cubic root of 164785487 is about 548.2428628087.

The spelling of 164785487 in words is "one hundred sixty-four million, seven hundred eighty-five thousand, four hundred eighty-seven".