667273337 has 2 divisors, whose sum is σ = 667273338. Its totient is φ = 667273336.

The previous prime is 667273297. The next prime is 667273361. The reversal of 667273337 is 733372766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 490356736 + 176916601 = 22144^2 + 13301^2 .

It is a cyclic number.

It is not a de Polignac number, because 667273337 - 2¹² = 667269241 is a prime.

It is a super-2 number, since 2×667273337² = 890507412542231138, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (667275337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333636668 + 333636669.

It is an arithmetic number, because the mean of its divisors is an integer number (333636669).

Almost surely, 2^667273337 is an apocalyptic number.

It is an amenable number.

667273337 is a deficient number, since it is larger than the sum of its proper divisors (1).

667273337 is an equidigital number, since it uses as much as digits as its factorization.

667273337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 666792, while the sum is 44.

The square root of 667273337 is about 25831.6344237061. The cubic root of 667273337 is about 873.8453720727.

The spelling of 667273337 in words is "six hundred sixty-seven million, two hundred seventy-three thousand, three hundred thirty-seven".