89671725 has 96 divisors (see below), whose sum is σ = 193737600. Its totient is φ = 40089600.

The previous prime is 89671721. The next prime is 89671759. The reversal of 89671725 is 52717698.

It is not a de Polignac number, because 89671725 - 2² = 89671721 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89671721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 96061 + ... + 96989.

It is an arithmetic number, because the mean of its divisors is an integer number (2018100).

Almost surely, 2^89671725 is an apocalyptic number.

It is an amenable number.

89671725 is an abundant number, since it is smaller than the sum of its proper divisors (104065875).

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

89671725 is a wasteful number, since it uses less digits than its factorization.

89671725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972 (or 961 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 89671725 is about 9469.5155631109. The cubic root of 89671725 is about 447.5949467190.

The spelling of 89671725 in words is "eighty-nine million, six hundred seventy-one thousand, seven hundred twenty-five".