73506653 has 6 divisors (see below), whose sum is σ = 80796702. Its totient is φ = 66824120.

The previous prime is 73506583. The next prime is 73506661. The reversal of 73506653 is 35660537.

It can be written as a sum of positive squares in only one way, i.e., 73239364 + 267289 = 8558^2 + 517^2 .

It is not a de Polignac number, because 73506653 - 2²⁴ = 56729437 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 (73506683) 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, 303626 + ... + 303867.

It is an arithmetic number, because the mean of its divisors is an integer number (13466117).

Almost surely, 2^73506653 is an apocalyptic number.

It is an amenable number.

73506653 is a deficient number, since it is larger than the sum of its proper divisors (7290049).

73506653 is a wasteful number, since it uses less digits than its factorization.

73506653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607515 (or 607504 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 35.

The square root of 73506653 is about 8573.6021018006. The cubic root of 73506653 is about 418.8985747977.

The spelling of 73506653 in words is "seventy-three million, five hundred six thousand, six hundred fifty-three".