60506721 has 24 divisors (see below), whose sum is σ = 99493056. Its totient is φ = 35075040.

The previous prime is 60506717. The next prime is 60506749. The reversal of 60506721 is 12760506.

It is not a de Polignac number, because 60506721 - 2² = 60506717 is a prime.

It is a super-2 number, since 2×60506721² = 7322126572343682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (60506221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11010 + ... + 15563.

It is an arithmetic number, because the mean of its divisors is an integer number (4145544).

Almost surely, 2^60506721 is an apocalyptic number.

It is an amenable number.

60506721 is a deficient number, since it is larger than the sum of its proper divisors (38986335).

60506721 is a wasteful number, since it uses less digits than its factorization.

60506721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26613 (or 26610 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 60506721 is about 7778.6066232970. The cubic root of 60506721 is about 392.5857570200.

The spelling of 60506721 in words is "sixty million, five hundred six thousand, seven hundred twenty-one".