651789140 has 12 divisors (see below), whose sum is σ = 1368757236. Its totient is φ = 260715648.

The previous prime is 651789121. The next prime is 651789179. The reversal of 651789140 is 41987156.

It can be written as a sum of positive squares in 2 ways, for example, as 84015556 + 567773584 = 9166^2 + 23828^2 .

It is a congruent number.

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, 16294709 + ... + 16294748.

It is an arithmetic number, because the mean of its divisors is an integer number (114063103).

Almost surely, 2^651789140 is an apocalyptic number.

It is an amenable number.

651789140 is an abundant number, since it is smaller than the sum of its proper divisors (716968096).

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

651789140 is a wasteful number, since it uses less digits than its factorization.

651789140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32589466 (or 32589464 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 651789140 is about 25530.1613782600. The cubic root of 651789140 is about 867.0331582788.

The spelling of 651789140 in words is "six hundred fifty-one million, seven hundred eighty-nine thousand, one hundred forty".