72168337 has 2 divisors, whose sum is σ = 72168338. Its totient is φ = 72168336.

The previous prime is 72168331. The next prime is 72168353. The reversal of 72168337 is 73386127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69906321 + 2262016 = 8361^2 + 1504^2 .

It is a cyclic number.

It is not a de Polignac number, because 72168337 - 2³ = 72168329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72168296 and 72168305.

It is not a weakly prime, because it can be changed into another prime (72168331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36084168 + 36084169.

It is an arithmetic number, because the mean of its divisors is an integer number (36084169).

Almost surely, 2^72168337 is an apocalyptic number.

It is an amenable number.

72168337 is a deficient number, since it is larger than the sum of its proper divisors (1).

72168337 is an equidigital number, since it uses as much as digits as its factorization.

72168337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 72168337 is about 8495.1949359623. The cubic root of 72168337 is about 416.3407299208.

The spelling of 72168337 in words is "seventy-two million, one hundred sixty-eight thousand, three hundred thirty-seven".