65423279 has 4 divisors (see below), whose sum is σ = 65441376. Its totient is φ = 65405184.

The previous prime is 65423273. The next prime is 65423287. The reversal of 65423279 is 97232456.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65423279 is a prime.

It is a super-2 number, since 2×65423279² = 8560410870223682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65423273) 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, 1559 + ... + 11544.

It is an arithmetic number, because the mean of its divisors is an integer number (16360344).

Almost surely, 2^65423279 is an apocalyptic number.

65423279 is a deficient number, since it is larger than the sum of its proper divisors (18097).

65423279 is a wasteful number, since it uses less digits than its factorization.

65423279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18096.

The product of its digits is 90720, while the sum is 38.

The square root of 65423279 is about 8088.4658001379. The cubic root of 65423279 is about 402.9434516850.

The spelling of 65423279 in words is "sixty-five million, four hundred twenty-three thousand, two hundred seventy-nine".