73065639 has 16 divisors (see below), whose sum is σ = 100356480. Its totient is φ = 47250720.

The previous prime is 73065637. The next prime is 73065701. The reversal of 73065639 is 93656037.

It is not a de Polignac number, because 73065639 - 2¹ = 73065637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73065597 and 73065606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73065637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45724 + ... + 47294.

It is an arithmetic number, because the mean of its divisors is an integer number (6272280).

Almost surely, 2^73065639 is an apocalyptic number.

73065639 is a deficient number, since it is larger than the sum of its proper divisors (27290841).

73065639 is a wasteful number, since it uses less digits than its factorization.

73065639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030.

The product of its (nonzero) digits is 102060, while the sum is 39.

The square root of 73065639 is about 8547.8441141612. The cubic root of 73065639 is about 418.0591458777.

The spelling of 73065639 in words is "seventy-three million, sixty-five thousand, six hundred thirty-nine".