651916782 has 96 divisors (see below), whose sum is σ = 1686333600. Its totient is φ = 185898240.

The previous prime is 651916757. The next prime is 651916823. The reversal of 651916782 is 287619156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108144 + ... + 114012.

It is an arithmetic number, because the mean of its divisors is an integer number (17565975).

Almost surely, 2^651916782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651916782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843166800).

651916782 is an abundant number, since it is smaller than the sum of its proper divisors (1034416818).

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

651916782 is a wasteful number, since it uses less digits than its factorization.

651916782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919 (or 5902 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 651916782 is about 25532.6610834045. The cubic root of 651916782 is about 867.0897525647.

The spelling of 651916782 in words is "six hundred fifty-one million, nine hundred sixteen thousand, seven hundred eighty-two".