3663399361 has 4 divisors (see below), whose sum is σ = 3663524800. Its totient is φ = 3663273924.

The previous prime is 3663399293. The next prime is 3663399371. The reversal of 3663399361 is 1639933663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3663399361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3663399371) 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, 6700 + ... + 85858.

It is an arithmetic number, because the mean of its divisors is an integer number (915881200).

Almost surely, 2^3663399361 is an apocalyptic number.

It is an amenable number.

3663399361 is a deficient number, since it is larger than the sum of its proper divisors (125439).

3663399361 is an equidigital number, since it uses as much as digits as its factorization.

3663399361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125438.

The product of its digits is 1417176, while the sum is 49.

The square root of 3663399361 is about 60526.0221805464. The cubic root of 3663399361 is about 1541.5635103291.

The spelling of 3663399361 in words is "three billion, six hundred sixty-three million, three hundred ninety-nine thousand, three hundred sixty-one".