649828946 has 8 divisors (see below), whose sum is σ = 1049723724. Its totient is φ = 299921040.

The previous prime is 649828939. The next prime is 649828951.

649828946 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 639837025 + 9991921 = 25295^2 + 3161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 649828891 and 649828900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12496685 + ... + 12496736.

Almost surely, 2^649828946 is an apocalyptic number.

649828946 is a deficient number, since it is larger than the sum of its proper divisors (399894778).

649828946 is a wasteful number, since it uses less digits than its factorization.

649828946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24993436.

The product of its digits is 5971968, while the sum is 56.

The square root of 649828946 is about 25491.7427022948. The cubic root of 649828946 is about 866.1631121801.

The spelling of 649828946 in words is "six hundred forty-nine million, eight hundred twenty-eight thousand, nine hundred forty-six".