690796481 has 2 divisors, whose sum is σ = 690796482. Its totient is φ = 690796480.

The previous prime is 690796453. The next prime is 690796489. The reversal of 690796481 is 184697096.

690796481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 575040400 + 115756081 = 23980^2 + 10759^2 .

It is a cyclic number.

It is not a de Polignac number, because 690796481 - 2¹⁸ = 690534337 is a prime.

It is a super-2 number, since 2×690796481² = 954399556323966722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (690796489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345398240 + 345398241.

It is an arithmetic number, because the mean of its divisors is an integer number (345398241).

Almost surely, 2^690796481 is an apocalyptic number.

It is an amenable number.

690796481 is a deficient number, since it is larger than the sum of its proper divisors (1).

690796481 is an equidigital number, since it uses as much as digits as its factorization.

690796481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 690796481 is about 26283.0074572907. The cubic root of 690796481 is about 883.9954686916.

The spelling of 690796481 in words is "six hundred ninety million, seven hundred ninety-six thousand, four hundred eighty-one".