65189089 has 4 divisors (see below), whose sum is σ = 74501824. Its totient is φ = 55876356.

The previous prime is 65189087. The next prime is 65189119. The reversal of 65189089 is 98098156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65189089 - 2¹ = 65189087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65189081) 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, 4656357 + ... + 4656370.

It is an arithmetic number, because the mean of its divisors is an integer number (18625456).

Almost surely, 2^65189089 is an apocalyptic number.

It is an amenable number.

65189089 is a deficient number, since it is larger than the sum of its proper divisors (9312735).

65189089 is an equidigital number, since it uses as much as digits as its factorization.

65189089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9312734.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 65189089 is about 8073.9760341482. The cubic root of 65189089 is about 402.4620830246.

The spelling of 65189089 in words is "sixty-five million, one hundred eighty-nine thousand, eighty-nine".