89671777 has 4 divisors (see below), whose sum is σ = 96569620. Its totient is φ = 82773936.

The previous prime is 89671759. The next prime is 89671781. The reversal of 89671777 is 77717698.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49336576 + 40335201 = 7024^2 + 6351^2 .

It is a cyclic number.

It is not a de Polignac number, because 89671777 - 2¹¹ = 89669729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89671717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3448902 + ... + 3448927.

It is an arithmetic number, because the mean of its divisors is an integer number (24142405).

Almost surely, 2^89671777 is an apocalyptic number.

It is an amenable number.

89671777 is a deficient number, since it is larger than the sum of its proper divisors (6897843).

89671777 is a wasteful number, since it uses less digits than its factorization.

89671777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6897842.

The product of its digits is 1037232, while the sum is 52.

The square root of 89671777 is about 9469.5183087631. The cubic root of 89671777 is about 447.5950332380.

The spelling of 89671777 in words is "eighty-nine million, six hundred seventy-one thousand, seven hundred seventy-seven".