89061640 has 32 divisors (see below), whose sum is σ = 212177880. Its totient is φ = 33528832.

The previous prime is 89061631. The next prime is 89061641. The reversal of 89061640 is 4616098.

It can be written as a sum of positive squares in 4 ways, for example, as 88623396 + 438244 = 9414^2 + 662^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 89061596 and 89061605.

It is not an unprimeable number, because it can be changed into a prime (89061641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64807 + ... + 66166.

Almost surely, 2^89061640 is an apocalyptic number.

It is an amenable number.

89061640 is an abundant number, since it is smaller than the sum of its proper divisors (123116240).

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

89061640 is a wasteful number, since it uses less digits than its factorization.

89061640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131001 (or 130997 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 89061640 is about 9437.2474800654. The cubic root of 89061640 is about 446.5775595126.

The spelling of 89061640 in words is "eighty-nine million, sixty-one thousand, six hundred forty".