649167632 has 20 divisors (see below), whose sum is σ = 1258823820. Its totient is φ = 324309888.

The previous prime is 649167601. The next prime is 649167641. The reversal of 649167632 is 236761946.

It can be written as a sum of positive squares in 2 ways, for example, as 425844496 + 223323136 = 20636^2 + 14944^2 .

It is a super-2 number, since 2×649167632² = 842837228872974848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158 + ... + 36170.

It is an arithmetic number, because the mean of its divisors is an integer number (62941191).

Almost surely, 2^649167632 is an apocalyptic number.

It is an amenable number.

649167632 is a deficient number, since it is larger than the sum of its proper divisors (609656188).

649167632 is a wasteful number, since it uses less digits than its factorization.

649167632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34250 (or 34244 counting only the distinct ones).

The product of its digits is 326592, while the sum is 44.

The square root of 649167632 is about 25478.7682590819. The cubic root of 649167632 is about 865.8691885685.

The spelling of 649167632 in words is "six hundred forty-nine million, one hundred sixty-seven thousand, six hundred thirty-two".