89587074721 has 3 divisors (see below), whose sum is σ = 89587374033. Its totient is φ = 89586775410.

The previous prime is 89587074719. The next prime is 89587074737. The reversal of 89587074721 is 12747078598.

The square root of 89587074721 is 299311.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 89587074721 - 2¹ = 89587074719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89587074701) 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 2 ways as a sum of consecutive naturals, for example, 149656 + ... + 448966.

It is an arithmetic number, because the mean of its divisors is an integer number (29862458011).

Almost surely, 2^89587074721 is an apocalyptic number.

89587074721 is the 299311-st square number.

89587074721 is the 149656-th centered octagonal number.

It is an amenable number.

89587074721 is a deficient number, since it is larger than the sum of its proper divisors (299312).

89587074721 is an frugal number, since it uses more digits than its factorization.

89587074721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598622 (or 299311 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 58.

The spelling of 89587074721 in words is "eighty-nine billion, five hundred eighty-seven million, seventy-four thousand, seven hundred twenty-one".