73720633 has 4 divisors (see below), whose sum is σ = 84252160. Its totient is φ = 63189108.

The previous prime is 73720609. The next prime is 73720637. The reversal of 73720633 is 33602737.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73720633 - 2²¹ = 71623481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73720595 and 73720604.

It is not an unprimeable number, because it can be changed into a prime (73720637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5265753 + ... + 5265766.

It is an arithmetic number, because the mean of its divisors is an integer number (21063040).

Almost surely, 2^73720633 is an apocalyptic number.

It is an amenable number.

73720633 is a deficient number, since it is larger than the sum of its proper divisors (10531527).

73720633 is a wasteful number, since it uses less digits than its factorization.

73720633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10531526.

The product of its (nonzero) digits is 15876, while the sum is 31.

The square root of 73720633 is about 8586.0720355702. The cubic root of 73720633 is about 419.3046563164.

The spelling of 73720633 in words is "seventy-three million, seven hundred twenty thousand, six hundred thirty-three".