564778653 has 16 divisors (see below), whose sum is σ = 768113280. Its totient is φ = 368997824.

The previous prime is 564778541. The next prime is 564778661. The reversal of 564778653 is 356877465.

It is a cyclic number.

It is not a de Polignac number, because 564778653 - 2¹³ = 564770461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 564778596 and 564778605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564778853) 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, 208375 + ... + 211067.

It is an arithmetic number, because the mean of its divisors is an integer number (48007080).

Almost surely, 2^564778653 is an apocalyptic number.

564778653 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

564778653 is a deficient number, since it is larger than the sum of its proper divisors (203334627).

564778653 is a wasteful number, since it uses less digits than its factorization.

564778653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068.

The product of its digits is 4233600, while the sum is 51.

The square root of 564778653 is about 23765.0721227603. The cubic root of 564778653 is about 826.5949691944.

The spelling of 564778653 in words is "five hundred sixty-four million, seven hundred seventy-eight thousand, six hundred fifty-three".