690773273 has 2 divisors, whose sum is σ = 690773274. Its totient is φ = 690773272.

The previous prime is 690773269. The next prime is 690773353. The reversal of 690773273 is 372377096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 667085584 + 23687689 = 25828^2 + 4867^2 .

It is a cyclic number.

It is not a de Polignac number, because 690773273 - 2² = 690773269 is a prime.

It is a super-2 number, since 2×690773273² = 954335429382265058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (690773263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345386636 + 345386637.

It is an arithmetic number, because the mean of its divisors is an integer number (345386637).

Almost surely, 2^690773273 is an apocalyptic number.

It is an amenable number.

690773273 is a deficient number, since it is larger than the sum of its proper divisors (1).

690773273 is an equidigital number, since it uses as much as digits as its factorization.

690773273 is an evil number, because the sum of its binary digits is even.

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

The square root of 690773273 is about 26282.5659515961. The cubic root of 690773273 is about 883.9855690095.

The spelling of 690773273 in words is "six hundred ninety million, seven hundred seventy-three thousand, two hundred seventy-three".