651079812 has 24 divisors (see below), whose sum is σ = 1571572800. Its totient is φ = 209542816.

The previous prime is 651079801. The next prime is 651079817. The reversal of 651079812 is 218970156.

It is not an unprimeable number, because it can be changed into a prime (651079817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935112 + ... + 935807.

It is an arithmetic number, because the mean of its divisors is an integer number (65482200).

Almost surely, 2^651079812 is an apocalyptic number.

It is an amenable number.

651079812 is an abundant number, since it is smaller than the sum of its proper divisors (920492988).

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

651079812 is a wasteful number, since it uses less digits than its factorization.

651079812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870955 (or 1870953 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 651079812 is about 25516.2656358645. The cubic root of 651079812 is about 866.7185196457.

The spelling of 651079812 in words is "six hundred fifty-one million, seventy-nine thousand, eight hundred twelve".