164752691 has 2 divisors, whose sum is σ = 164752692. Its totient is φ = 164752690.

The previous prime is 164752663. The next prime is 164752699. The reversal of 164752691 is 196257461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164752691 - 2²⁶ = 97643827 is a prime.

It is not a weakly prime, because it can be changed into another prime (164752699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82376345 + 82376346.

It is an arithmetic number, because the mean of its divisors is an integer number (82376346).

Almost surely, 2^164752691 is an apocalyptic number.

164752691 is a deficient number, since it is larger than the sum of its proper divisors (1).

164752691 is an equidigital number, since it uses as much as digits as its factorization.

164752691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 164752691 is about 12835.6024790424. The cubic root of 164752691 is about 548.2064895289.

The spelling of 164752691 in words is "one hundred sixty-four million, seven hundred fifty-two thousand, six hundred ninety-one".