73644469 has 2 divisors, whose sum is σ = 73644470. Its totient is φ = 73644468.

The previous prime is 73644463. The next prime is 73644481. The reversal of 73644469 is 96444637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58706244 + 14938225 = 7662^2 + 3865^2 .

It is a cyclic number.

It is not a de Polignac number, because 73644469 - 2¹¹ = 73642421 is a prime.

It is a super-2 number, since 2×73644469² = 10847015628583922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73644463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36822234 + 36822235.

It is an arithmetic number, because the mean of its divisors is an integer number (36822235).

Almost surely, 2^73644469 is an apocalyptic number.

It is an amenable number.

73644469 is a deficient number, since it is larger than the sum of its proper divisors (1).

73644469 is an equidigital number, since it uses as much as digits as its factorization.

73644469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 43.

The square root of 73644469 is about 8581.6355667204. The cubic root of 73644469 is about 419.1602059186.

The spelling of 73644469 in words is "seventy-three million, six hundred forty-four thousand, four hundred sixty-nine".