648855276 has 24 divisors (see below), whose sum is σ = 1528148160. Its totient is φ = 214263312.

The previous prime is 648855253. The next prime is 648855289. The reversal of 648855276 is 672558846.

It is a happy 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, 251386 + ... + 253953.

It is an arithmetic number, because the mean of its divisors is an integer number (63672840).

Almost surely, 2^648855276 is an apocalyptic number.

It is an amenable number.

648855276 is an abundant number, since it is smaller than the sum of its proper divisors (879292884).

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

648855276 is a wasteful number, since it uses less digits than its factorization.

648855276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505453 (or 505451 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The square root of 648855276 is about 25472.6377903821. The cubic root of 648855276 is about 865.7302913033.

The spelling of 648855276 in words is "six hundred forty-eight million, eight hundred fifty-five thousand, two hundred seventy-six".