651371328 has 112 divisors (see below), whose sum is σ = 1947672000. Its totient is φ = 213410304.

The previous prime is 651371327. The next prime is 651371423. The reversal of 651371328 is 823173156.

651371328 is a `hidden beast` number, since 6 + 513 + 7 + 132 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 651371292 and 651371301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651371323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98758 + ... + 105146.

Almost surely, 2^651371328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651371328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973836000).

651371328 is an abundant number, since it is smaller than the sum of its proper divisors (1296300672).

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

651371328 is a wasteful number, since it uses less digits than its factorization.

651371328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6469 (or 6453 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 651371328 is about 25521.9773528620. The cubic root of 651371328 is about 866.8478558712.

It can be divided in two parts, 6513 and 71328, that added together give a square (77841 = 279²).

The spelling of 651371328 in words is "six hundred fifty-one million, three hundred seventy-one thousand, three hundred twenty-eight".