581976061 has 16 divisors (see below), whose sum is σ = 654128640. Its totient is φ = 515093040.

The previous prime is 581976053. The next prime is 581976067. The reversal of 581976061 is 160679185.

It is a happy number.

It is not a de Polignac number, because 581976061 - 2³ = 581976053 is a prime.

It is a super-2 number, since 2×581976061² = 677392271154151442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 581975999 and 581976017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581976067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3306 + ... + 34276.

It is an arithmetic number, because the mean of its divisors is an integer number (40883040).

Almost surely, 2^581976061 is an apocalyptic number.

It is an amenable number.

581976061 is a deficient number, since it is larger than the sum of its proper divisors (72152579).

581976061 is a wasteful number, since it uses less digits than its factorization.

581976061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31056.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 581976061 is about 24124.1800067899. The cubic root of 581976061 is about 834.9011134644.

The spelling of 581976061 in words is "five hundred eighty-one million, nine hundred seventy-six thousand, sixty-one".