897000749581 has 8 divisors (see below), whose sum is σ = 941115542528. Its totient is φ = 853834662000.

The previous prime is 897000749569. The next prime is 897000749597. The reversal of 897000749581 is 185947000798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 897000749581 - 2¹⁷ = 897000618509 is a prime.

It is a super-2 number, since 2×897000749581² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897000749681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237174405 + ... + 237178186.

It is an arithmetic number, because the mean of its divisors is an integer number (117639442816).

Almost surely, 2^897000749581 is an apocalyptic number.

It is an amenable number.

897000749581 is a deficient number, since it is larger than the sum of its proper divisors (44114792947).

897000749581 is a wasteful number, since it uses less digits than its factorization.

897000749581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474352683.

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 897000749581 in words is "eight hundred ninety-seven billion, seven hundred forty-nine thousand, five hundred eighty-one".