8897407785 has 96 divisors (see below), whose sum is σ = 18465408000. Its totient is φ = 3877106688.

The previous prime is 8897407781. The next prime is 8897407789. The reversal of 8897407785 is 5877047988.

It is an interprime number because it is at equal distance from previous prime (8897407781) and next prime (8897407789).

It is not a de Polignac number, because 8897407785 - 2² = 8897407781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (8897407781) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 715501 + ... + 727829.

It is an arithmetic number, because the mean of its divisors is an integer number (192348000).

Almost surely, 2^8897407785 is an apocalyptic number.

It is an amenable number.

8897407785 is an abundant number, since it is smaller than the sum of its proper divisors (9568000215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8897407785 is a wasteful number, since it uses less digits than its factorization.

8897407785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12455 (or 12452 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 63.

The square root of 8897407785 is about 94326.0716080130. The cubic root of 8897407785 is about 2072.1498807846.

The spelling of 8897407785 in words is "eight billion, eight hundred ninety-seven million, four hundred seven thousand, seven hundred eighty-five".