649090848 has 144 divisors (see below), whose sum is σ = 2028771360. Its totient is φ = 181085184.

The previous prime is 649090831. The next prime is 649090861. The reversal of 649090848 is 848090946.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 649090797 and 649090806.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200668 + ... + 203876.

It is an arithmetic number, because the mean of its divisors is an integer number (14088690).

Almost surely, 2^649090848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649090848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014385680).

649090848 is an abundant number, since it is smaller than the sum of its proper divisors (1379680512).

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

649090848 is a wasteful number, since it uses less digits than its factorization.

649090848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279 (or 3264 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 649090848 is about 25477.2613912877. The cubic root of 649090848 is about 865.8350486854.

The spelling of 649090848 in words is "six hundred forty-nine million, ninety thousand, eight hundred forty-eight".