565626780 has 96 divisors (see below), whose sum is σ = 1763361600. Its totient is φ = 150522624.

The previous prime is 565626769. The next prime is 565626781. The reversal of 565626780 is 87626565.

565626780 is a `hidden beast` number, since 5 + 6 + 562 + 6 + 7 + 80 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565626781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395106 + ... + 396534.

It is an arithmetic number, because the mean of its divisors is an integer number (18368350).

Almost surely, 2^565626780 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 565626780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881680800).

565626780 is an abundant number, since it is smaller than the sum of its proper divisors (1197734820).

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

565626780 is a wasteful number, since it uses less digits than its factorization.

565626780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 565626780 is about 23782.9094099103. The cubic root of 565626780 is about 827.0085276004.

The spelling of 565626780 in words is "five hundred sixty-five million, six hundred twenty-six thousand, seven hundred eighty".