651050868 has 36 divisors (see below), whose sum is σ = 1644967968. Its totient is φ = 200322720.

The previous prime is 651050861. The next prime is 651050879. The reversal of 651050868 is 868050156.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651050861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158488 + ... + 162543.

Almost surely, 2^651050868 is an apocalyptic number.

It is an amenable number.

651050868 is an abundant number, since it is smaller than the sum of its proper divisors (993917100).

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

651050868 is a wasteful number, since it uses less digits than its factorization.

651050868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321064 (or 321049 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 651050868 is about 25515.6984619273. The cubic root of 651050868 is about 866.7056760219.

The spelling of 651050868 in words is "six hundred fifty-one million, fifty thousand, eight hundred sixty-eight".