73403606761 has 3 divisors (see below), whose sum is σ = 73403877693. Its totient is φ = 73403335830.

The previous prime is 73403606753. The next prime is 73403606839. The reversal of 73403606761 is 16760630437.

The square root of 73403606761 is 270931.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16760630437 = 821 ⋅20414897.

It is not a de Polignac number, because 73403606761 - 2³ = 73403606753 is a prime.

It is a super-2 number, since 2×73403606761² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73403606701) 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 in 2 ways as a sum of consecutive naturals, for example, 135466 + ... + 406396.

It is an arithmetic number, because the mean of its divisors is an integer number (24467959231).

Almost surely, 2^73403606761 is an apocalyptic number.

73403606761 is the 270931-st square number.

73403606761 is the 135466-th centered octagonal number.

It is an amenable number.

73403606761 is a deficient number, since it is larger than the sum of its proper divisors (270932).

73403606761 is an frugal number, since it uses more digits than its factorization.

73403606761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541862 (or 270931 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 73403606761 in words is "seventy-three billion, four hundred three million, six hundred six thousand, seven hundred sixty-one".