61723223 has 4 divisors (see below), whose sum is σ = 63851640. Its totient is φ = 59594808.

The previous prime is 61723219. The next prime is 61723247. The reversal of 61723223 is 32232716.

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 61723223 - 2² = 61723219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61723192 and 61723201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61729223) 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, 1064165 + ... + 1064222.

It is an arithmetic number, because the mean of its divisors is an integer number (15962910).

Almost surely, 2^61723223 is an apocalyptic number.

61723223 is a deficient number, since it is larger than the sum of its proper divisors (2128417).

61723223 is a wasteful number, since it uses less digits than its factorization.

61723223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128416.

The product of its digits is 3024, while the sum is 26.

The square root of 61723223 is about 7856.4128582961. The cubic root of 61723223 is about 395.1993289742.

Adding to 61723223 its reverse (32232716), we get a palindrome (93955939).

The spelling of 61723223 in words is "sixty-one million, seven hundred twenty-three thousand, two hundred twenty-three".