651006 has 24 divisors (see below), whose sum is σ = 1436760. Its totient is φ = 212976.

The previous prime is 650987. The next prime is 651017. The reversal of 651006 is 600156.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 651006.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 651006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 756 + ... + 1368.

It is an arithmetic number, because the mean of its divisors is an integer number (59865).

2⁶⁵¹⁰⁰⁶ is an apocalyptic number.

651006 is an abundant number, since it is smaller than the sum of its proper divisors (785754).

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

651006 is a wasteful number, since it uses less digits than its factorization.

651006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 651006 is about 806.8494283322. The cubic root of 651006 is about 86.6685765523.

The spelling of 651006 in words is "six hundred fifty-one thousand, six".