651576540 has 48 divisors (see below), whose sum is σ = 1827590688. Its totient is φ = 173451264.

The previous prime is 651576509. The next prime is 651576547. The reversal of 651576540 is 45675156.

651576540 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 (651576547) 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, 26424 + ... + 44736.

It is an arithmetic number, because the mean of its divisors is an integer number (38074806).

Almost surely, 2^651576540 is an apocalyptic number.

651576540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

651576540 is an abundant number, since it is smaller than the sum of its proper divisors (1176014148).

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

651576540 is a wasteful number, since it uses less digits than its factorization.

651576540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18918 (or 18916 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 651576540 is about 25525.9973360494. The cubic root of 651576540 is about 866.9388786601.

The spelling of 651576540 in words is "six hundred fifty-one million, five hundred seventy-six thousand, five hundred forty".