649363496 has 8 divisors (see below), whose sum is σ = 1217556570. Its totient is φ = 324681744.

The previous prime is 649363471. The next prime is 649363529. The reversal of 649363496 is 694363946.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 555544900 + 93818596 = 23570^2 + 9686^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40585211 + ... + 40585226.

Almost surely, 2^649363496 is an apocalyptic number.

It is an amenable number.

649363496 is a deficient number, since it is larger than the sum of its proper divisors (568193074).

649363496 is a wasteful number, since it uses less digits than its factorization.

649363496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81170443 (or 81170439 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 50.

The square root of 649363496 is about 25482.6116400969. The cubic root of 649363496 is about 865.9562618918.

The spelling of 649363496 in words is "six hundred forty-nine million, three hundred sixty-three thousand, four hundred ninety-six".