89197637 has 2 divisors, whose sum is σ = 89197638. Its totient is φ = 89197636.

The previous prime is 89197631. The next prime is 89197679. The reversal of 89197637 is 73679198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49646116 + 39551521 = 7046^2 + 6289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89197637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89197631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44598818 + 44598819.

It is an arithmetic number, because the mean of its divisors is an integer number (44598819).

Almost surely, 2^89197637 is an apocalyptic number.

It is an amenable number.

89197637 is a deficient number, since it is larger than the sum of its proper divisors (1).

89197637 is an equidigital number, since it uses as much as digits as its factorization.

89197637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 50.

The square root of 89197637 is about 9444.4500633970. The cubic root of 89197637 is about 446.8047516811.

The spelling of 89197637 in words is "eighty-nine million, one hundred ninety-seven thousand, six hundred thirty-seven".