73015993 has 4 divisors (see below), whose sum is σ = 76858960. Its totient is φ = 69173028.

The previous prime is 73015973. The next prime is 73016017. The reversal of 73015993 is 39951037.

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 73015993 - 2¹³ = 73007801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73015913) 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, 1921455 + ... + 1921492.

It is an arithmetic number, because the mean of its divisors is an integer number (19214740).

Almost surely, 2^73015993 is an apocalyptic number.

It is an amenable number.

73015993 is a deficient number, since it is larger than the sum of its proper divisors (3842967).

73015993 is a wasteful number, since it uses less digits than its factorization.

73015993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842966.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 73015993 is about 8544.9396135959. The cubic root of 73015993 is about 417.9644380359.

The spelling of 73015993 in words is "seventy-three million, fifteen thousand, nine hundred ninety-three".