64737469 has 2 divisors, whose sum is σ = 64737470. Its totient is φ = 64737468.

The previous prime is 64737467. The next prime is 64737487. The reversal of 64737469 is 96473746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33489369 + 31248100 = 5787^2 + 5590^2 .

It is a cyclic number.

It is not a de Polignac number, because 64737469 - 2¹ = 64737467 is a prime.

It is a super-2 number, since 2×64737469² = 8381879785051922, which contains 22 as substring.

Together with 64737467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64737467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32368734 + 32368735.

It is an arithmetic number, because the mean of its divisors is an integer number (32368735).

Almost surely, 2^64737469 is an apocalyptic number.

It is an amenable number.

64737469 is a deficient number, since it is larger than the sum of its proper divisors (1).

64737469 is an equidigital number, since it uses as much as digits as its factorization.

64737469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 46.

The square root of 64737469 is about 8045.9597935858. The cubic root of 64737469 is about 401.5305299756.

The spelling of 64737469 in words is "sixty-four million, seven hundred thirty-seven thousand, four hundred sixty-nine".