3660650513 has 4 divisors (see below), whose sum is σ = 3942239028. Its totient is φ = 3379062000.

The previous prime is 3660650473. The next prime is 3660650533. The reversal of 3660650513 is 3150560663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148547344 + 3512103169 = 12188^2 + 59263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3660650513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3660650533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140794238 + ... + 140794263.

It is an arithmetic number, because the mean of its divisors is an integer number (985559757).

Almost surely, 2^3660650513 is an apocalyptic number.

It is an amenable number.

3660650513 is a deficient number, since it is larger than the sum of its proper divisors (281588515).

3660650513 is a wasteful number, since it uses less digits than its factorization.

3660650513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281588514.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 3660650513 is about 60503.3099342507. The cubic root of 3660650513 is about 1541.1778408386.

The spelling of 3660650513 in words is "three billion, six hundred sixty million, six hundred fifty thousand, five hundred thirteen".