3690005521 has 2 divisors, whose sum is σ = 3690005522. Its totient is φ = 3690005520.

The previous prime is 3690005513. The next prime is 3690005603. The reversal of 3690005521 is 1255000963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3171942400 + 518063121 = 56320^2 + 22761^2 .

It is an emirp because it is prime and its reverse (1255000963) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3690005521 - 2³ = 3690005513 is a prime.

It is a super-2 number, since 2×3690005521² = 27232281490020962882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3690105521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845002760 + 1845002761.

It is an arithmetic number, because the mean of its divisors is an integer number (1845002761).

Almost surely, 2^3690005521 is an apocalyptic number.

It is an amenable number.

3690005521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3690005521 is an equidigital number, since it uses as much as digits as its factorization.

3690005521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 3690005521 is about 60745.4156377253. The cubic root of 3690005521 is about 1545.2864815093.

The spelling of 3690005521 in words is "three billion, six hundred ninety million, five thousand, five hundred twenty-one".