64423269 has 10 divisors (see below), whose sum is σ = 96237350. Its totient is φ = 42948792.

The previous prime is 64423267. The next prime is 64423277. The reversal of 64423269 is 96232446.

64423269 is a `hidden beast` number, since 644 + 2 + 3 + 2 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 64160100 + 263169 = 8010^2 + 513^2 .

It is not a de Polignac number, because 64423269 - 2¹ = 64423267 is a prime.

It is a super-2 number, since 2×64423269² = 8300715177292722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64423267) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 397594 + ... + 397755.

It is an arithmetic number, because the mean of its divisors is an integer number (9623735).

Almost surely, 2^64423269 is an apocalyptic number.

It is an amenable number.

64423269 is a deficient number, since it is larger than the sum of its proper divisors (31814081).

64423269 is an equidigital number, since it uses as much as digits as its factorization.

64423269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795361 (or 795352 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 64423269 is about 8026.4107171263. The cubic root of 64423269 is about 400.8798735539.

The spelling of 64423269 in words is "sixty-four million, four hundred twenty-three thousand, two hundred sixty-nine".