73137745 has 8 divisors (see below), whose sum is σ = 92384640. Its totient is φ = 55430640.

The previous prime is 73137733. The next prime is 73137763. The reversal of 73137745 is 54773137.

73137745 is nontrivially palindromic in base 4.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-73137745 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384841 + ... + 385030.

It is an arithmetic number, because the mean of its divisors is an integer number (11548080).

Almost surely, 2^73137745 is an apocalyptic number.

It is an amenable number.

73137745 is a deficient number, since it is larger than the sum of its proper divisors (19246895).

73137745 is a wasteful number, since it uses less digits than its factorization.

73137745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769895.

The product of its digits is 61740, while the sum is 37.

The square root of 73137745 is about 8552.0608627395. The cubic root of 73137745 is about 418.1966234590.

The spelling of 73137745 in words is "seventy-three million, one hundred thirty-seven thousand, seven hundred forty-five".