73813315 has 4 divisors (see below), whose sum is σ = 88575984. Its totient is φ = 59050648.

The previous prime is 73813301. The next prime is 73813319. The reversal of 73813315 is 51331837.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51331837 = 23 ⋅2231819.

It is a cyclic number.

It is not a de Polignac number, because 73813315 - 2⁹ = 73812803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73813319) 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, 7381327 + ... + 7381336.

It is an arithmetic number, because the mean of its divisors is an integer number (22143996).

Almost surely, 2^73813315 is an apocalyptic number.

73813315 is a deficient number, since it is larger than the sum of its proper divisors (14762669).

73813315 is a wasteful number, since it uses less digits than its factorization.

73813315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14762668.

The product of its digits is 7560, while the sum is 31.

The square root of 73813315 is about 8591.4675696298. The cubic root of 73813315 is about 419.4803001314.

The spelling of 73813315 in words is "seventy-three million, eight hundred thirteen thousand, three hundred fifteen".