60871221 has 12 divisors (see below), whose sum is σ = 88270572. Its totient is φ = 40421376.

The previous prime is 60871219. The next prime is 60871241. The reversal of 60871221 is 12217806.

60871221 = 54² + 55² + ... + 567².

It can be written as a sum of positive squares in 2 ways, for example, as 52403121 + 8468100 = 7239^2 + 2910^2 .

It is not a de Polignac number, because 60871221 - 2¹ = 60871219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60871201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10846 + ... + 15471.

It is an arithmetic number, because the mean of its divisors is an integer number (7355881).

Almost surely, 2^60871221 is an apocalyptic number.

It is an amenable number.

60871221 is a deficient number, since it is larger than the sum of its proper divisors (27399351).

60871221 is a wasteful number, since it uses less digits than its factorization.

60871221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26580 (or 26577 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 60871221 is about 7802.0010894642. The cubic root of 60871221 is about 393.3725077488.

The spelling of 60871221 in words is "sixty million, eight hundred seventy-one thousand, two hundred twenty-one".