72697337 has 2 divisors, whose sum is σ = 72697338. Its totient is φ = 72697336.

The previous prime is 72697309. The next prime is 72697357. The reversal of 72697337 is 73379627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72267001 + 430336 = 8501^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 72697337 - 2¹⁰ = 72696313 is a prime.

It is not a weakly prime, because it can be changed into another prime (72697357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36348668 + 36348669.

It is an arithmetic number, because the mean of its divisors is an integer number (36348669).

Almost surely, 2^72697337 is an apocalyptic number.

It is an amenable number.

72697337 is a deficient number, since it is larger than the sum of its proper divisors (1).

72697337 is an equidigital number, since it uses as much as digits as its factorization.

72697337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 44.

The square root of 72697337 is about 8526.2733359892. The cubic root of 72697337 is about 417.3555253272.

The spelling of 72697337 in words is "seventy-two million, six hundred ninety-seven thousand, three hundred thirty-seven".