649363946 has 64 divisors (see below), whose sum is σ = 1243662336. Its totient is φ = 246984000.

The previous prime is 649363907. The next prime is 649363951.

It is a happy number.

649363946 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 649363894 and 649363903.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1290731 + ... + 1291233.

It is an arithmetic number, because the mean of its divisors is an integer number (19432224).

Almost surely, 2^649363946 is an apocalyptic number.

649363946 is a deficient number, since it is larger than the sum of its proper divisors (594298390).

649363946 is a wasteful number, since it uses less digits than its factorization.

649363946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707.

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

The square root of 649363946 is about 25482.6204696456. The cubic root of 649363946 is about 865.9564619237.

The spelling of 649363946 in words is "six hundred forty-nine million, three hundred sixty-three thousand, nine hundred forty-six".