649235750 has 16 divisors (see below), whose sum is σ = 1215369792. Its totient is φ = 259694200.

The previous prime is 649235747. The next prime is 649235767. The reversal of 649235750 is 57532946.

It is a junction number, because it is equal to n+sod(n) for n = 649235698 and 649235707.

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, 1298222 + ... + 1298721.

It is an arithmetic number, because the mean of its divisors is an integer number (75960612).

Almost surely, 2^649235750 is an apocalyptic number.

649235750 is a deficient number, since it is larger than the sum of its proper divisors (566134042).

649235750 is a wasteful number, since it uses less digits than its factorization.

649235750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596960 (or 2596950 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 649235750 is about 25480.1049840851. The cubic root of 649235750 is about 865.8994731009.

The spelling of 649235750 in words is "six hundred forty-nine million, two hundred thirty-five thousand, seven hundred fifty".