564651738 has 24 divisors (see below), whose sum is σ = 1398185568. Its totient is φ = 161329032.

The previous prime is 564651707. The next prime is 564651743. The reversal of 564651738 is 837156465.

564651738 is a `hidden beast` number, since 564 + 6 + 51 + 7 + 38 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 564651693 and 564651702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2240556 + ... + 2240807.

It is an arithmetic number, because the mean of its divisors is an integer number (58257732).

Almost surely, 2^564651738 is an apocalyptic number.

564651738 is an abundant number, since it is smaller than the sum of its proper divisors (833533830).

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

564651738 is a wasteful number, since it uses less digits than its factorization.

564651738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481378 (or 4481375 counting only the distinct ones).

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

The square root of 564651738 is about 23762.4017725482. The cubic root of 564651738 is about 826.5330480866.

The spelling of 564651738 in words is "five hundred sixty-four million, six hundred fifty-one thousand, seven hundred thirty-eight".