690812727079 has 2 divisors, whose sum is σ = 690812727080. Its totient is φ = 690812727078.

The previous prime is 690812727053. The next prime is 690812727181. The reversal of 690812727079 is 970727218096.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 690812727079 - 2¹⁷ = 690812596007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690812727019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345406363539 + 345406363540.

It is an arithmetic number, because the mean of its divisors is an integer number (345406363540).

Almost surely, 2^690812727079 is an apocalyptic number.

690812727079 is a deficient number, since it is larger than the sum of its proper divisors (1).

690812727079 is an equidigital number, since it uses as much as digits as its factorization.

690812727079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5334336, while the sum is 58.

The spelling of 690812727079 in words is "six hundred ninety billion, eight hundred twelve million, seven hundred twenty-seven thousand, seventy-nine".