72537703 has 4 divisors (see below), whose sum is σ = 82900240. Its totient is φ = 62175168.

The previous prime is 72537697. The next prime is 72537743. The reversal of 72537703 is 30773527.

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

It is a cyclic number.

It is not a de Polignac number, because 72537703 - 2⁹ = 72537191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72537743) 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, 5181258 + ... + 5181271.

It is an arithmetic number, because the mean of its divisors is an integer number (20725060).

Almost surely, 2^72537703 is an apocalyptic number.

72537703 is a deficient number, since it is larger than the sum of its proper divisors (10362537).

72537703 is a wasteful number, since it uses less digits than its factorization.

72537703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10362536.

The product of its (nonzero) digits is 30870, while the sum is 34.

The square root of 72537703 is about 8516.9068915892. The cubic root of 72537703 is about 417.0498151032.

The spelling of 72537703 in words is "seventy-two million, five hundred thirty-seven thousand, seven hundred three".