65427999 has 32 divisors (see below), whose sum is σ = 107810304. Its totient is φ = 34369920.

The previous prime is 65427997. The next prime is 65428003. The reversal of 65427999 is 99972456.

It is not a de Polignac number, because 65427999 - 2¹ = 65427997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65427997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120669 + ... + 121209.

It is an arithmetic number, because the mean of its divisors is an integer number (3369072).

Almost surely, 2^65427999 is an apocalyptic number.

65427999 is a deficient number, since it is larger than the sum of its proper divisors (42382305).

65427999 is a wasteful number, since it uses less digits than its factorization.

65427999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007.

The product of its digits is 1224720, while the sum is 51.

The square root of 65427999 is about 8088.7575683785. The cubic root of 65427999 is about 402.9531416475.

It can be divided in two parts, 6542 and 7999, that added together give a palindrome (14541).

The spelling of 65427999 in words is "sixty-five million, four hundred twenty-seven thousand, nine hundred ninety-nine".