722135237 has 2 divisors, whose sum is σ = 722135238. Its totient is φ = 722135236.

The previous prime is 722135191. The next prime is 722135291. The reversal of 722135237 is 732531227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424607236 + 297528001 = 20606^2 + 17249^2 .

It is a cyclic number.

It is not a de Polignac number, because 722135237 - 2¹⁴ = 722118853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722135737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361067618 + 361067619.

It is an arithmetic number, because the mean of its divisors is an integer number (361067619).

Almost surely, 2^722135237 is an apocalyptic number.

It is an amenable number.

722135237 is a deficient number, since it is larger than the sum of its proper divisors (1).

722135237 is an equidigital number, since it uses as much as digits as its factorization.

722135237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 32.

The square root of 722135237 is about 26872.5740672530. The cubic root of 722135237 is about 897.1660805726.

The spelling of 722135237 in words is "seven hundred twenty-two million, one hundred thirty-five thousand, two hundred thirty-seven".