651600540 has 72 divisors (see below), whose sum is σ = 1978664688. Its totient is φ = 173571840.

The previous prime is 651600533. The next prime is 651600541. The reversal of 651600540 is 45006156.

It is a happy number.

651600540 is a `hidden beast` number, since 6 + 5 + 1 + 600 + 54 + 0 = 666.

651600540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651600541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265720 + ... + 268160.

It is an arithmetic number, because the mean of its divisors is an integer number (27481454).

Almost surely, 2^651600540 is an apocalyptic number.

651600540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

651600540 is an abundant number, since it is smaller than the sum of its proper divisors (1327064148).

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

651600540 is a wasteful number, since it uses less digits than its factorization.

651600540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939 (or 3934 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 651600540 is about 25526.4674406781. The cubic root of 651600540 is about 866.9495227294.

Adding to 651600540 its reverse (45006156), we get a palindrome (696606696).

The spelling of 651600540 in words is "six hundred fifty-one million, six hundred thousand, five hundred forty".