649714990401 has 15 divisors (see below), whose sum is σ = 970572736243. Its totient is φ = 433138490640.

The previous prime is 649714990391. The next prime is 649714990513. The reversal of 649714990401 is 104099417946.

The square root of 649714990401 is 806049.

It is a perfect power (a square), and thus also a powerful number.

649714990401 is a `hidden beast` number, since 6 + 4 + 9 + 7 + 149 + 90 + 401 = 666.

649714990401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 139576212801 + 510138777600 = 373599^2 + 714240^2 .

It is not a de Polignac number, because 649714990401 - 2⁵ = 649714990369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649714990601) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 7209661 + ... + 7299221.

Almost surely, 2^649714990401 is an apocalyptic number.

649714990401 is the 806049-th square number.

649714990401 is the 403025-th centered octagonal number.

It is an amenable number.

649714990401 is a deficient number, since it is larger than the sum of its proper divisors (320857745842).

649714990401 is an frugal number, since it uses more digits than its factorization.

649714990401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179134 (or 89564 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 649714990401 in words is "six hundred forty-nine billion, seven hundred fourteen million, nine hundred ninety thousand, four hundred one".