3663414721 has 2 divisors, whose sum is σ = 3663414722. Its totient is φ = 3663414720.

The previous prime is 3663414709. The next prime is 3663414737. The reversal of 3663414721 is 1274143663.

3663414721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3051347121 + 612067600 = 55239^2 + 24740^2 .

It is a cyclic number.

It is not a de Polignac number, because 3663414721 - 2⁷ = 3663414593 is a prime.

It is not a weakly prime, because it can be changed into another prime (3663414751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1831707360 + 1831707361.

It is an arithmetic number, because the mean of its divisors is an integer number (1831707361).

Almost surely, 2^3663414721 is an apocalyptic number.

It is an amenable number.

3663414721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3663414721 is an equidigital number, since it uses as much as digits as its factorization.

3663414721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 3663414721 is about 60526.1490679855. The cubic root of 3663414721 is about 1541.5656648292.

The spelling of 3663414721 in words is "three billion, six hundred sixty-three million, four hundred fourteen thousand, seven hundred twenty-one".