651825798 has 64 divisors (see below), whose sum is σ = 1518289920. Its totient is φ = 184730112.

The previous prime is 651825793. The next prime is 651825827. The reversal of 651825798 is 897528156.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 651825798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651825791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57093 + ... + 67551.

It is an arithmetic number, because the mean of its divisors is an integer number (23723280).

Almost surely, 2^651825798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651825798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (759144960).

651825798 is an abundant number, since it is smaller than the sum of its proper divisors (866464122).

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

651825798 is a wasteful number, since it uses less digits than its factorization.

651825798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10541.

The product of its digits is 1209600, while the sum is 51.

The square root of 651825798 is about 25530.8793033064. The cubic root of 651825798 is about 867.0494125670.

The spelling of 651825798 in words is "six hundred fifty-one million, eight hundred twenty-five thousand, seven hundred ninety-eight".