3665620351 has 4 divisors (see below), whose sum is σ = 3671067712. Its totient is φ = 3660172992.

The previous prime is 3665620339. The next prime is 3665620367. The reversal of 3665620351 is 1530265663.

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

It is a cyclic number.

It is not a de Polignac number, because 3665620351 - 2⁵ = 3665620319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3665620351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665630351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2722671 + ... + 2724016.

It is an arithmetic number, because the mean of its divisors is an integer number (917766928).

Almost surely, 2^3665620351 is an apocalyptic number.

3665620351 is a deficient number, since it is larger than the sum of its proper divisors (5447361).

3665620351 is an equidigital number, since it uses as much as digits as its factorization.

3665620351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447360.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 3665620351 is about 60544.3667982414. The cubic root of 3665620351 is about 1541.8749792798.

The spelling of 3665620351 in words is "three billion, six hundred sixty-five million, six hundred twenty thousand, three hundred fifty-one".