649464946 has 32 divisors (see below), whose sum is σ = 1069714800. Its totient is φ = 293932800.

The previous prime is 649464943. The next prime is 649464983.

649464946 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 266832225 + 382632721 = 16335^2 + 19561^2 .

It is a junction number, because it is equal to n+sod(n) for n = 649464893 and 649464902.

It is not an unprimeable number, because it can be changed into a prime (649464943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285100 + ... + 287368.

Almost surely, 2^649464946 is an apocalyptic number.

649464946 is a deficient number, since it is larger than the sum of its proper divisors (420249854).

649464946 is a wasteful number, since it uses less digits than its factorization.

649464946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494.

The product of its digits is 4478976, while the sum is 52.

The square root of 649464946 is about 25484.6021354072. The cubic root of 649464946 is about 866.0013556330.

The spelling of 649464946 in words is "six hundred forty-nine million, four hundred sixty-four thousand, nine hundred forty-six".