65261723 has 4 divisors (see below), whose sum is σ = 65286360. Its totient is φ = 65237088.

The previous prime is 65261717. The next prime is 65261737. The reversal of 65261723 is 32716256.

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

It is a cyclic number.

It is not a de Polignac number, because 65261723 - 2⁸ = 65261467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65261723.

It is not an unprimeable number, because it can be changed into a prime (65261743) 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, 7790 + ... + 13827.

It is an arithmetic number, because the mean of its divisors is an integer number (16321590).

Almost surely, 2^65261723 is an apocalyptic number.

65261723 is a deficient number, since it is larger than the sum of its proper divisors (24637).

65261723 is a wasteful number, since it uses less digits than its factorization.

65261723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24636.

The product of its digits is 15120, while the sum is 32.

The square root of 65261723 is about 8078.4728135954. The cubic root of 65261723 is about 402.6115026138.

Adding to 65261723 its reverse (32716256), we get a palindrome (97977979).

The spelling of 65261723 in words is "sixty-five million, two hundred sixty-one thousand, seven hundred twenty-three".