581675640 has 128 divisors (see below), whose sum is σ = 2147765760. Its totient is φ = 122724864.

The previous prime is 581675639. The next prime is 581675659. The reversal of 581675640 is 46576185.

581675640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 581675592 and 581675601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15714 + ... + 37553.

It is an arithmetic number, because the mean of its divisors is an integer number (16779420).

Almost surely, 2^581675640 is an apocalyptic number.

It is an amenable number.

581675640 is an abundant number, since it is smaller than the sum of its proper divisors (1566090120).

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

581675640 is a wasteful number, since it uses less digits than its factorization.

581675640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53301 (or 53297 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 581675640 is about 24117.9526494269. The cubic root of 581675640 is about 834.7574277155.

The spelling of 581675640 in words is "five hundred eighty-one million, six hundred seventy-five thousand, six hundred forty".