60666720 has 96 divisors (see below), whose sum is σ = 192326400. Its totient is φ = 16074240.

The previous prime is 60666719. The next prime is 60666733. The reversal of 60666720 is 2766606.

60666720 = 266² + 267² + ... + 585².

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100981 + ... + 101579.

It is an arithmetic number, because the mean of its divisors is an integer number (2003400).

Almost surely, 2^60666720 is an apocalyptic number.

60666720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 60666720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96163200).

60666720 is an abundant number, since it is smaller than the sum of its proper divisors (131659680).

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

60666720 is a wasteful number, since it uses less digits than its factorization.

60666720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 60666720 is about 7788.8843873818. The cubic root of 60666720 is about 392.9314929567.

The spelling of 60666720 in words is "sixty million, six hundred sixty-six thousand, seven hundred twenty".