64723469 has 2 divisors, whose sum is σ = 64723470. Its totient is φ = 64723468.

The previous prime is 64723459. The next prime is 64723489. The reversal of 64723469 is 96432746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64722025 + 1444 = 8045^2 + 38^2 .

It is a cyclic number.

It is not a de Polignac number, because 64723469 - 2²⁰ = 63674893 is a prime.

It is a super-2 number, since 2×64723469² = 8378254878787922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64723429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32361734 + 32361735.

It is an arithmetic number, because the mean of its divisors is an integer number (32361735).

Almost surely, 2^64723469 is an apocalyptic number.

It is an amenable number.

64723469 is a deficient number, since it is larger than the sum of its proper divisors (1).

64723469 is an equidigital number, since it uses as much as digits as its factorization.

64723469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 41.

The square root of 64723469 is about 8045.0897446828. The cubic root of 64723469 is about 401.5015831499.

The spelling of 64723469 in words is "sixty-four million, seven hundred twenty-three thousand, four hundred sixty-nine".