581669372 has 6 divisors (see below), whose sum is σ = 1017921408. Its totient is φ = 290834684.

The previous prime is 581669371. The next prime is 581669393. The reversal of 581669372 is 273966185.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581669371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72708668 + ... + 72708675.

It is an arithmetic number, because the mean of its divisors is an integer number (169653568).

Almost surely, 2^581669372 is an apocalyptic number.

It is an amenable number.

581669372 is a deficient number, since it is larger than the sum of its proper divisors (436252036).

581669372 is a wasteful number, since it uses less digits than its factorization.

581669372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145417347 (or 145417345 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The square root of 581669372 is about 24117.8227043819. The cubic root of 581669372 is about 834.7544293214.

The spelling of 581669372 in words is "five hundred eighty-one million, six hundred sixty-nine thousand, three hundred seventy-two".