651294072 has 288 divisors, whose sum is σ = 2230759440. Its totient is φ = 168652800.

The previous prime is 651294071. The next prime is 651294073. The reversal of 651294072 is 270492156.

It is an interprime number because it is at equal distance from previous prime (651294071) and next prime (651294073).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651294071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10676922 + ... + 10676982.

Almost surely, 2^651294072 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 651294072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115379720).

651294072 is an abundant number, since it is smaller than the sum of its proper divisors (1579465368).

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

651294072 is a wasteful number, since it uses less digits than its factorization.

651294072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 107 counting only the distinct ones).

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

The square root of 651294072 is about 25520.4637888891. The cubic root of 651294072 is about 866.8135836403.

The spelling of 651294072 in words is "six hundred fifty-one million, two hundred ninety-four thousand, seventy-two".