64650169 has 2 divisors, whose sum is σ = 64650170. Its totient is φ = 64650168.

The previous prime is 64650161. The next prime is 64650191. The reversal of 64650169 is 96105646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62726400 + 1923769 = 7920^2 + 1387^2 .

It is a cyclic number.

It is not a de Polignac number, because 64650169 - 2³ = 64650161 is a prime.

It is a super-2 number, since 2×64650169² = 8359288703457122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64650161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32325084 + 32325085.

It is an arithmetic number, because the mean of its divisors is an integer number (32325085).

Almost surely, 2^64650169 is an apocalyptic number.

It is an amenable number.

64650169 is a deficient number, since it is larger than the sum of its proper divisors (1).

64650169 is an equidigital number, since it uses as much as digits as its factorization.

64650169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 64650169 is about 8040.5328803507. The cubic root of 64650169 is about 401.3499576605.

The spelling of 64650169 in words is "sixty-four million, six hundred fifty thousand, one hundred sixty-nine".