567981540 has 216 divisors, whose sum is σ = 2034631872. Its totient is φ = 127854720.

The previous prime is 567981523. The next prime is 567981541. The reversal of 567981540 is 45189765.

567981540 is a `hidden beast` number, since 567 + 9 + 81 + 5 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (567981541) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 625767 + ... + 626673.

It is an arithmetic number, because the mean of its divisors is an integer number (9419592).

Almost surely, 2^567981540 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 567981540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1017315936).

567981540 is an abundant number, since it is smaller than the sum of its proper divisors (1466650332).

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

567981540 is a wasteful number, since it uses less digits than its factorization.

567981540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 567981540 is about 23832.3632902824. The cubic root of 567981540 is about 828.1545780156.

The spelling of 567981540 in words is "five hundred sixty-seven million, nine hundred eighty-one thousand, five hundred forty".