61580223 has 32 divisors (see below), whose sum is σ = 97044480. Its totient is φ = 38507040.

The previous prime is 61580219. The next prime is 61580243. The reversal of 61580223 is 32208516.

61580223 is a `hidden beast` number, since 61 + 580 + 2 + 23 = 666.

It is not a de Polignac number, because 61580223 - 2² = 61580219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61580203) 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, 31978 + ... + 33848.

It is an arithmetic number, because the mean of its divisors is an integer number (3032640).

Almost surely, 2^61580223 is an apocalyptic number.

61580223 is a deficient number, since it is larger than the sum of its proper divisors (35464257).

61580223 is a wasteful number, since it uses less digits than its factorization.

61580223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 61580223 is about 7847.3067354348. The cubic root of 61580223 is about 394.8938944828.

Adding to 61580223 its reverse (32208516), we get a palindrome (93788739).

The spelling of 61580223 in words is "sixty-one million, five hundred eighty thousand, two hundred twenty-three".