73506761 has 4 divisors (see below), whose sum is σ = 73550724. Its totient is φ = 73462800.

The previous prime is 73506757. The next prime is 73506767. The reversal of 73506761 is 16760537.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32993536 + 40513225 = 5744^2 + 6365^2 .

It is a cyclic number.

It is not a de Polignac number, because 73506761 - 2² = 73506757 is a prime.

It is a super-2 number, since 2×73506761² = 10806487825422242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73506767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19370 + ... + 22851.

It is an arithmetic number, because the mean of its divisors is an integer number (18387681).

Almost surely, 2^73506761 is an apocalyptic number.

It is an amenable number.

73506761 is a deficient number, since it is larger than the sum of its proper divisors (43963).

73506761 is a wasteful number, since it uses less digits than its factorization.

73506761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43962.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 73506761 is about 8573.6084002012. The cubic root of 73506761 is about 418.8987799539.

The spelling of 73506761 in words is "seventy-three million, five hundred six thousand, seven hundred sixty-one".