73764613 has 6 divisors (see below), whose sum is σ = 79875474. Its totient is φ = 68090256.

The previous prime is 73764601. The next prime is 73764629. The reversal of 73764613 is 31646737.

It can be written as a sum of positive squares in 3 ways, for example, as 3992004 + 69772609 = 1998^2 + 8353^2 .

It is not a de Polignac number, because 73764613 - 2¹⁷ = 73633541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73764653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218070 + ... + 218407.

It is an arithmetic number, because the mean of its divisors is an integer number (13312579).

Almost surely, 2^73764613 is an apocalyptic number.

It is an amenable number.

73764613 is a deficient number, since it is larger than the sum of its proper divisors (6110861).

73764613 is a wasteful number, since it uses less digits than its factorization.

73764613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436503 (or 436490 counting only the distinct ones).

The product of its digits is 63504, while the sum is 37.

The square root of 73764613 is about 8588.6327782715. The cubic root of 73764613 is about 419.3880221806.

The spelling of 73764613 in words is "seventy-three million, seven hundred sixty-four thousand, six hundred thirteen".