73072037 has 4 divisors (see below), whose sum is σ = 73172460. Its totient is φ = 72971616.

The previous prime is 73071997. The next prime is 73072057. The reversal of 73072037 is 73027037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73027037 = 1063 ⋅68699.

It can be written as a sum of positive squares in 2 ways, for example, as 54184321 + 18887716 = 7361^2 + 4346^2 .

It is not a de Polignac number, because 73072037 - 2²² = 68877733 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 (73072057) 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, 49112 + ... + 50577.

It is an arithmetic number, because the mean of its divisors is an integer number (18293115).

Almost surely, 2^73072037 is an apocalyptic number.

It is an amenable number.

73072037 is a deficient number, since it is larger than the sum of its proper divisors (100423).

73072037 is an equidigital number, since it uses as much as digits as its factorization.

73072037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100422.

The product of its (nonzero) digits is 6174, while the sum is 29.

The square root of 73072037 is about 8548.2183523820. The cubic root of 73072037 is about 418.0713479852.

The spelling of 73072037 in words is "seventy-three million, seventy-two thousand, thirty-seven".