649199300 has 18 divisors (see below), whose sum is σ = 1408762698. Its totient is φ = 259679680.

The previous prime is 649199273. The next prime is 649199329. The reversal of 649199300 is 3991946.

It can be written as a sum of positive squares in 3 ways, for example, as 3632836 + 645566464 = 1906^2 + 25408^2 .

It is a super-2 number, since 2×649199300² = 842919462240980000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3245897 + ... + 3246096.

Almost surely, 2^649199300 is an apocalyptic number.

It is an amenable number.

649199300 is an abundant number, since it is smaller than the sum of its proper divisors (759563398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649199300 is a wasteful number, since it uses less digits than its factorization.

649199300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6492007 (or 6492000 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 649199300 is about 25479.3897101167. The cubic root of 649199300 is about 865.8832680852.

The spelling of 649199300 in words is "six hundred forty-nine million, one hundred ninety-nine thousand, three hundred".