649799512 has 16 divisors (see below), whose sum is σ = 1218939840. Its totient is φ = 324748896.

The previous prime is 649799497. The next prime is 649799533. The reversal of 649799512 is 215997946.

It is a super-3 number, since 3×649799512³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 649799512.

It is a congruent number.

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, 633 + ... + 36055.

It is an arithmetic number, because the mean of its divisors is an integer number (76183740).

Almost surely, 2^649799512 is an apocalyptic number.

It is an amenable number.

649799512 is a deficient number, since it is larger than the sum of its proper divisors (569140328).

649799512 is a wasteful number, since it uses less digits than its factorization.

649799512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37722 (or 37718 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 52.

The square root of 649799512 is about 25491.1653715557. The cubic root of 649799512 is about 866.1500343642.

The spelling of 649799512 in words is "six hundred forty-nine million, seven hundred ninety-nine thousand, five hundred twelve".