65270189 has 4 divisors (see below), whose sum is σ = 66501756. Its totient is φ = 64038624.

The previous prime is 65270147. The next prime is 65270201. The reversal of 65270189 is 98107256.

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 52809289 + 12460900 = 7267^2 + 3530^2 .

It is a cyclic number.

It is not a de Polignac number, because 65270189 - 2²⁴ = 48492973 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65270119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615704 + ... + 615809.

It is an arithmetic number, because the mean of its divisors is an integer number (16625439).

Almost surely, 2^65270189 is an apocalyptic number.

It is an amenable number.

65270189 is a deficient number, since it is larger than the sum of its proper divisors (1231567).

65270189 is a wasteful number, since it uses less digits than its factorization.

65270189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231566.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 65270189 is about 8078.9967817793. The cubic root of 65270189 is about 402.6289112950.

The spelling of 65270189 in words is "sixty-five million, two hundred seventy thousand, one hundred eighty-nine".