60661321 has 16 divisors (see below), whose sum is σ = 74421504. Its totient is φ = 48259584.

The previous prime is 60661303. The next prime is 60661339. The reversal of 60661321 is 12316606.

It is an interprime number because it is at equal distance from previous prime (60661303) and next prime (60661339).

It is a cyclic number.

It is not a de Polignac number, because 60661321 - 2¹¹ = 60659273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60661351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5196 + ... + 12178.

It is an arithmetic number, because the mean of its divisors is an integer number (4651344).

Almost surely, 2^60661321 is an apocalyptic number.

It is an amenable number.

60661321 is a deficient number, since it is larger than the sum of its proper divisors (13760183).

60661321 is a wasteful number, since it uses less digits than its factorization.

60661321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 60661321 is about 7788.5377960179. The cubic root of 60661321 is about 392.9198363732.

Adding to 60661321 its reverse (12316606), we get a palindrome (72977927).

The spelling of 60661321 in words is "sixty million, six hundred sixty-one thousand, three hundred twenty-one".