72337337 has 4 divisors (see below), whose sum is σ = 72415476. Its totient is φ = 72259200.

The previous prime is 72337333. The next prime is 72337357. The reversal of 72337337 is 73373327.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3297856 + 69039481 = 1816^2 + 8309^2 .

It is a cyclic number.

It is not a de Polignac number, because 72337337 - 2² = 72337333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72337297 and 72337306.

It is not an unprimeable number, because it can be changed into a prime (72337333) 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, 37664 + ... + 39537.

It is an arithmetic number, because the mean of its divisors is an integer number (18103869).

Almost surely, 2^72337337 is an apocalyptic number.

It is an amenable number.

72337337 is a deficient number, since it is larger than the sum of its proper divisors (78139).

72337337 is an equidigital number, since it uses as much as digits as its factorization.

72337337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78138.

The product of its digits is 55566, while the sum is 35.

The square root of 72337337 is about 8505.1359189610. The cubic root of 72337337 is about 416.6654648143.

The spelling of 72337337 in words is "seventy-two million, three hundred thirty-seven thousand, three hundred thirty-seven".