573947640 has 384 divisors, whose sum is σ = 2287872000. Its totient is φ = 125349120.

The previous prime is 573947639. The next prime is 573947651. The reversal of 573947640 is 46749375.

573947640 is a `hidden beast` number, since 573 + 9 + 4 + 76 + 4 + 0 = 666.

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

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 7265121 + ... + 7265199.

It is an arithmetic number, because the mean of its divisors is an integer number (5958000).

Almost surely, 2^573947640 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 573947640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143936000).

573947640 is an abundant number, since it is smaller than the sum of its proper divisors (1713924360).

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

573947640 is a wasteful number, since it uses less digits than its factorization.

573947640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 573947640 is about 23957.2043444138. The cubic root of 573947640 is about 831.0441400266.

The spelling of 573947640 in words is "five hundred seventy-three million, nine hundred forty-seven thousand, six hundred forty".