649893048 has 64 divisors (see below), whose sum is σ = 1860188160. Its totient is φ = 185348736.

The previous prime is 649893047. The next prime is 649893053. The reversal of 649893048 is 840398946.

It is a happy number.

649893048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 25493²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649893047) 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, 98790 + ... + 105162.

It is an arithmetic number, because the mean of its divisors is an integer number (29065440).

Almost surely, 2^649893048 is an apocalyptic number.

It is an amenable number.

649893048 is an abundant number, since it is smaller than the sum of its proper divisors (1210295112).

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

649893048 is a wasteful number, since it uses less digits than its factorization.

649893048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996 (or 6992 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 649893048 is about 25492.9999803868. Note that the first 4 decimals coincide. The cubic root of 649893048 is about 866.1915919631.

The spelling of 649893048 in words is "six hundred forty-nine million, eight hundred ninety-three thousand, forty-eight".