649324690 has 32 divisors (see below), whose sum is σ = 1414329984. Its totient is φ = 209529600.

The previous prime is 649324651. The next prime is 649324699. The reversal of 649324690 is 96423946.

649324690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×649324690² = 843245106087192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (649324699) 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, 271636 + ... + 274015.

It is an arithmetic number, because the mean of its divisors is an integer number (44197812).

Almost surely, 2^649324690 is an apocalyptic number.

649324690 is an abundant number, since it is smaller than the sum of its proper divisors (765005294).

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

649324690 is a wasteful number, since it uses less digits than its factorization.

649324690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545682.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 649324690 is about 25481.8502075497. The cubic root of 649324690 is about 865.9390116828.

The spelling of 649324690 in words is "six hundred forty-nine million, three hundred twenty-four thousand, six hundred ninety".