649240910 has 16 divisors (see below), whose sum is σ = 1172857536. Its totient is φ = 258757728.

The previous prime is 649240909. The next prime is 649240973. The reversal of 649240910 is 19042946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114422 + ... + 119961.

It is an arithmetic number, because the mean of its divisors is an integer number (73303596).

Almost surely, 2^649240910 is an apocalyptic number.

649240910 is a deficient number, since it is larger than the sum of its proper divisors (523616626).

649240910 is a wasteful number, since it uses less digits than its factorization.

649240910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234667.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 649240910 is about 25480.2062393537. The cubic root of 649240910 is about 865.9017670952.

The spelling of 649240910 in words is "six hundred forty-nine million, two hundred forty thousand, nine hundred ten".