651916 has 12 divisors (see below), whose sum is σ = 1208088. Its totient is φ = 306752.

The previous prime is 651913. The next prime is 651943. The reversal of 651916 is 619156.

651916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (651913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4726 + ... + 4861.

It is an arithmetic number, because the mean of its divisors is an integer number (100674).

2⁶⁵¹⁹¹⁶ is an apocalyptic number.

It is an amenable number.

651916 is a deficient number, since it is larger than the sum of its proper divisors (556172).

651916 is a wasteful number, since it uses less digits than its factorization.

651916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9608 (or 9606 counting only the distinct ones).

The product of its digits is 1620, while the sum is 28.

The square root of 651916 is about 807.4131532245. The cubic root of 651916 is about 86.7089405862.

The spelling of 651916 in words is "six hundred fifty-one thousand, nine hundred sixteen".