89646661597 has 24 divisors (see below), whose sum is σ = 97479031104. Its totient is φ = 82281298176.

The previous prime is 89646661571. The next prime is 89646661607. The reversal of 89646661597 is 79516664698.

It is not a de Polignac number, because 89646661597 - 2¹¹ = 89646659549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89646661567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3138693 + ... + 3167125.

It is an arithmetic number, because the mean of its divisors is an integer number (4061626296).

Almost surely, 2^89646661597 is an apocalyptic number.

It is an amenable number.

89646661597 is a deficient number, since it is larger than the sum of its proper divisors (7832369507).

89646661597 is a wasteful number, since it uses less digits than its factorization.

89646661597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28677 (or 28648 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 67.

The spelling of 89646661597 in words is "eighty-nine billion, six hundred forty-six million, six hundred sixty-one thousand, five hundred ninety-seven".