3690523561 has 2 divisors, whose sum is σ = 3690523562. Its totient is φ = 3690523560.

The previous prime is 3690523457. The next prime is 3690523637. The reversal of 3690523561 is 1653250963.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3325713561 + 364810000 = 57669^2 + 19100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3690523561 is a prime.

It is a super-2 number, since 2×3690523561² = 27239928308592241442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3690523961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845261780 + 1845261781.

It is an arithmetic number, because the mean of its divisors is an integer number (1845261781).

Almost surely, 2^3690523561 is an apocalyptic number.

It is an amenable number.

3690523561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3690523561 is an equidigital number, since it uses as much as digits as its factorization.

3690523561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 3690523561 is about 60749.6795135579. The cubic root of 3690523561 is about 1545.3587923993.

The spelling of 3690523561 in words is "three billion, six hundred ninety million, five hundred twenty-three thousand, five hundred sixty-one".