60111666 has 64 divisors (see below), whose sum is σ = 139392000. Its totient is φ = 19180800.

The previous prime is 60111661. The next prime is 60111679. The reversal of 60111666 is 66611106.

It is a super-2 number, since 2×60111666² = 7226824778591112, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (60111661) 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, 249306 + ... + 249546.

It is an arithmetic number, because the mean of its divisors is an integer number (2178000).

Almost surely, 2^60111666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 60111666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69696000).

60111666 is an abundant number, since it is smaller than the sum of its proper divisors (79280334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

60111666 is a wasteful number, since it uses less digits than its factorization.

60111666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 60111666 is about 7753.1713511311. The cubic root of 60111666 is about 391.7294789458.

The spelling of 60111666 in words is "sixty million, one hundred eleven thousand, six hundred sixty-six".