648362920 has 16 divisors (see below), whose sum is σ = 1458816660. Its totient is φ = 259345152.

The previous prime is 648362887. The next prime is 648362933. The reversal of 648362920 is 29263846.

648362920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 557998884 + 90364036 = 23622^2 + 9506^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 16209073 = 648362920 / (6 + 4 + 8 + 3 + 6 + 2 + 9 + 2 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8104497 + ... + 8104576.

Almost surely, 2^648362920 is an apocalyptic number.

It is an amenable number.

648362920 is an abundant number, since it is smaller than the sum of its proper divisors (810453740).

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

648362920 is a wasteful number, since it uses less digits than its factorization.

648362920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16209084 (or 16209080 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 648362920 is about 25462.9715469346. The cubic root of 648362920 is about 865.5112617920.

The spelling of 648362920 in words is "six hundred forty-eight million, three hundred sixty-two thousand, nine hundred twenty".