564072381 has 12 divisors (see below), whose sum is σ = 815000160. Its totient is φ = 375942600.

The previous prime is 564072371. The next prime is 564072389. The reversal of 564072381 is 183270465.

564072381 is a `hidden beast` number, since 5 + 640 + 7 + 2 + 3 + 8 + 1 = 666.

It is not a de Polignac number, because 564072381 - 2⁶ = 564072317 is a prime.

It is a super-2 number, since 2×564072381² = 636355302014018322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564072389) 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, 38230 + ... + 50888.

It is an arithmetic number, because the mean of its divisors is an integer number (67916680).

Almost surely, 2^564072381 is an apocalyptic number.

It is an amenable number.

564072381 is a deficient number, since it is larger than the sum of its proper divisors (250927779).

564072381 is a wasteful number, since it uses less digits than its factorization.

564072381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17616 (or 17613 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 564072381 is about 23750.2080201416. The cubic root of 564072381 is about 826.2502651813.

It can be divided in two parts, 564072 and 381, that added together give a triangular number (564453 = T₁₀₆₂).

The spelling of 564072381 in words is "five hundred sixty-four million, seventy-two thousand, three hundred eighty-one".