73713021 has 8 divisors (see below), whose sum is σ = 98577024. Its totient is φ = 48995520.

The previous prime is 73712993. The next prime is 73713067. The reversal of 73713021 is 12031737.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73713021 - 2²⁵ = 40158589 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 73712982 and 73713000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73715021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35445 + ... + 37466.

It is an arithmetic number, because the mean of its divisors is an integer number (12322128).

Almost surely, 2^73713021 is an apocalyptic number.

It is an amenable number.

73713021 is a deficient number, since it is larger than the sum of its proper divisors (24864003).

73713021 is a wasteful number, since it uses less digits than its factorization.

73713021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73251.

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 73713021 is about 8585.6287480883. The cubic root of 73713021 is about 419.2902240976.

Adding to 73713021 its reverse (12031737), we get a palindrome (85744758).

The spelling of 73713021 in words is "seventy-three million, seven hundred thirteen thousand, twenty-one".