581348397 has 12 divisors (see below), whose sum is σ = 901683456. Its totient is φ = 332199000.

The previous prime is 581348393. The next prime is 581348407. The reversal of 581348397 is 793843185.

It is not a de Polignac number, because 581348397 - 2² = 581348393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581348393) 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, 1977229 + ... + 1977522.

It is an arithmetic number, because the mean of its divisors is an integer number (75140288).

Almost surely, 2^581348397 is an apocalyptic number.

It is an amenable number.

581348397 is a deficient number, since it is larger than the sum of its proper divisors (320335059).

581348397 is a wasteful number, since it uses less digits than its factorization.

581348397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954768 (or 3954761 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 581348397 is about 24111.1674748445. The cubic root of 581348397 is about 834.6008571980.

The spelling of 581348397 in words is "five hundred eighty-one million, three hundred forty-eight thousand, three hundred ninety-seven".