89877613 has 6 divisors (see below), whose sum is σ = 104551566. Its totient is φ = 77037912.

The previous prime is 89877553. The next prime is 89877631. The reversal of 89877613 is 31677898.

It can be written as a sum of positive squares in only one way, i.e., 73051209 + 16826404 = 8547^2 + 4102^2 .

It is not a de Polignac number, because 89877613 - 2¹³ = 89869421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1834237 = 89877613 / (8 + 9 + 8 + 7 + 7 + 6 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89877413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 917070 + ... + 917167.

It is an arithmetic number, because the mean of its divisors is an integer number (17425261).

Almost surely, 2^89877613 is an apocalyptic number.

It is an amenable number.

89877613 is a deficient number, since it is larger than the sum of its proper divisors (14673953).

89877613 is a wasteful number, since it uses less digits than its factorization.

89877613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834251 (or 1834244 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 89877613 is about 9480.3804248564. The cubic root of 89877613 is about 447.9372470698.

The spelling of 89877613 in words is "eighty-nine million, eight hundred seventy-seven thousand, six hundred thirteen".