651211072 has 14 divisors (see below), whose sum is σ = 1292247098. Its totient is φ = 325605504.

The previous prime is 651211069. The next prime is 651211081. The reversal of 651211072 is 270112156.

It can be written as a sum of positive squares in only one way, i.e., 330657856 + 320553216 = 18184^2 + 17904^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5087523 + ... + 5087650.

Almost surely, 2^651211072 is an apocalyptic number.

It is an amenable number.

651211072 is a deficient number, since it is larger than the sum of its proper divisors (641036026).

651211072 is a wasteful number, since it uses less digits than its factorization.

651211072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10175185 (or 10175175 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 651211072 is about 25518.8375910816. The cubic root of 651211072 is about 866.7767602416.

The spelling of 651211072 in words is "six hundred fifty-one million, two hundred eleven thousand, seventy-two".