6451560 has 48 divisors (see below), whose sum is σ = 20968740. Its totient is φ = 1720320.

The previous prime is 6451559. The next prime is 6451561. The reversal of 6451560 is 651546.

It is a happy number.

6451560 is a `hidden beast` number, since 645 + 15 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (6451559) and next prime (6451561).

It can be written as a sum of positive squares in 2 ways, for example, as 5447556 + 1004004 = 2334^2 + 1002^2 .

It is not an unprimeable number, because it can be changed into a prime (6451561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8601 + ... + 9320.

Almost surely, 2^6451560 is an apocalyptic number.

6451560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6451560 is an abundant number, since it is smaller than the sum of its proper divisors (14517180).

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

6451560 is a wasteful number, since it uses less digits than its factorization.

6451560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17938 (or 17931 counting only the distinct ones).

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

The square root of 6451560 is about 2539.9921259720. The cubic root of 6451560 is about 186.1608043998.

The spelling of 6451560 in words is "six million, four hundred fifty-one thousand, five hundred sixty".