651012 has 12 divisors (see below), whose sum is σ = 1519056. Its totient is φ = 217000.

The previous prime is 650987. The next prime is 651017. The reversal of 651012 is 210156.

651012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 650982 and 651000.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 651012.

It is not an unprimeable number, because it can be changed into a prime (651017) by changing a digit.

651012 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27114 + ... + 27137.

It is an arithmetic number, because the mean of its divisors is an integer number (126588).

2⁶⁵¹⁰¹² is an apocalyptic number.

It is an amenable number.

651012 is an abundant number, since it is smaller than the sum of its proper divisors (868044).

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

651012 is a wasteful number, since it uses less digits than its factorization.

651012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54258 (or 54256 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 651012 is about 806.8531464895. The cubic root of 651012 is about 86.6688428119.

Adding to 651012 its reverse (210156), we get a palindrome (861168).

The spelling of 651012 in words is "six hundred fifty-one thousand, twelve".