651394850 has 12 divisors (see below), whose sum is σ = 1211594514. Its totient is φ = 260557920.

The previous prime is 651394813. The next prime is 651394871. The reversal of 651394850 is 58493156.

It can be written as a sum of positive squares in 3 ways, for example, as 411237841 + 240157009 = 20279^2 + 15497^2 .

It is a junction number, because it is equal to n+sod(n) for n = 651394798 and 651394807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6513899 + ... + 6513998.

Almost surely, 2^651394850 is an apocalyptic number.

651394850 is a deficient number, since it is larger than the sum of its proper divisors (560199664).

651394850 is a wasteful number, since it uses less digits than its factorization.

651394850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13027909 (or 13027904 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 651394850 is about 25522.4381672285. The cubic root of 651394850 is about 866.8582901397.

The spelling of 651394850 in words is "six hundred fifty-one million, three hundred ninety-four thousand, eight hundred fifty".