65189755 has 4 divisors (see below), whose sum is σ = 78227712. Its totient is φ = 52151800.

The previous prime is 65189753. The next prime is 65189771. The reversal of 65189755 is 55798156.

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

It is not a de Polignac number, because 65189755 - 2¹ = 65189753 is a prime.

It is a super-5 number, since 5×65189755⁵ (a number of 40 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65189753) 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, 6518971 + ... + 6518980.

It is an arithmetic number, because the mean of its divisors is an integer number (19556928).

Almost surely, 2^65189755 is an apocalyptic number.

65189755 is a deficient number, since it is larger than the sum of its proper divisors (13037957).

65189755 is a wasteful number, since it uses less digits than its factorization.

65189755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13037956.

The product of its digits is 378000, while the sum is 46.

The square root of 65189755 is about 8074.0172776630. The cubic root of 65189755 is about 402.4634535957.

The spelling of 65189755 in words is "sixty-five million, one hundred eighty-nine thousand, seven hundred fifty-five".