61360221 has 8 divisors (see below), whose sum is σ = 88107040. Its totient is φ = 37760112.

The previous prime is 61360217. The next prime is 61360237. The reversal of 61360221 is 12206316.

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 61360221 - 2² = 61360217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61360241) 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, 786631 + ... + 786708.

It is an arithmetic number, because the mean of its divisors is an integer number (11013380).

Almost surely, 2^61360221 is an apocalyptic number.

It is an amenable number.

61360221 is a deficient number, since it is larger than the sum of its proper divisors (26746819).

61360221 is a wasteful number, since it uses less digits than its factorization.

61360221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573355.

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

The square root of 61360221 is about 7833.2765175245. The cubic root of 61360221 is about 394.4230663074.

Adding to 61360221 its reverse (12206316), we get a palindrome (73566537).

The spelling of 61360221 in words is "sixty-one million, three hundred sixty thousand, two hundred twenty-one".