73416639 has 4 divisors (see below), whose sum is σ = 97888856. Its totient is φ = 48944424.

The previous prime is 73416631. The next prime is 73416641. The reversal of 73416639 is 93661437.

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

It is not a de Polignac number, because 73416639 - 2³ = 73416631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73416597 and 73416606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73416631) 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, 12236104 + ... + 12236109.

It is an arithmetic number, because the mean of its divisors is an integer number (24472214).

Almost surely, 2^73416639 is an apocalyptic number.

73416639 is a deficient number, since it is larger than the sum of its proper divisors (24472217).

73416639 is a wasteful number, since it uses less digits than its factorization.

73416639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24472216.

The product of its digits is 81648, while the sum is 39.

The square root of 73416639 is about 8568.3510082162. The cubic root of 73416639 is about 418.7275148244.

The spelling of 73416639 in words is "seventy-three million, four hundred sixteen thousand, six hundred thirty-nine".