61601223 has 8 divisors (see below), whose sum is σ = 82782208. Its totient is φ = 40743864.

The previous prime is 61601209. The next prime is 61601227. The reversal of 61601223 is 32210616.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61601223 - 2⁹ = 61600711 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 61601223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61601227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80461 + ... + 81222.

It is an arithmetic number, because the mean of its divisors is an integer number (10347776).

Almost surely, 2^61601223 is an apocalyptic number.

61601223 is a deficient number, since it is larger than the sum of its proper divisors (21180985).

61601223 is a wasteful number, since it uses less digits than its factorization.

61601223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161813.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 61601223 is about 7848.6446600671. The cubic root of 61601223 is about 394.9387780990.

Adding to 61601223 its reverse (32210616), we get a palindrome (93811839).

The spelling of 61601223 in words is "sixty-one million, six hundred one thousand, two hundred twenty-three".