696090641 has 2 divisors, whose sum is σ = 696090642. Its totient is φ = 696090640.

The previous prime is 696090623. The next prime is 696090643. The reversal of 696090641 is 146090696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630010000 + 66080641 = 25100^2 + 8129^2 .

It is a cyclic number.

It is not a de Polignac number, because 696090641 - 2¹⁰ = 696089617 is a prime.

Together with 696090643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (696090643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348045320 + 348045321.

It is an arithmetic number, because the mean of its divisors is an integer number (348045321).

Almost surely, 2^696090641 is an apocalyptic number.

It is an amenable number.

696090641 is a deficient number, since it is larger than the sum of its proper divisors (1).

696090641 is an equidigital number, since it uses as much as digits as its factorization.

696090641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 696090641 is about 26383.5297297386. The cubic root of 696090641 is about 886.2479934147.

Subtracting from 696090641 its reverse (146090696), we obtain a palindrome (549999945).

The spelling of 696090641 in words is "six hundred ninety-six million, ninety thousand, six hundred forty-one".