66886260 has 96 divisors (see below), whose sum is σ = 217147392. Its totient is φ = 15066240.

The previous prime is 66886247. The next prime is 66886283. The reversal of 66886260 is 6268866.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28699 + ... + 30941.

It is an arithmetic number, because the mean of its divisors is an integer number (2261952).

Almost surely, 2^66886260 is an apocalyptic number.

66886260 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 66886260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108573696).

66886260 is an abundant number, since it is smaller than the sum of its proper divisors (150261132).

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

66886260 is a wasteful number, since it uses less digits than its factorization.

66886260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333 (or 2331 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 66886260 is about 8178.4020444094. The cubic root of 66886260 is about 405.9248487821.

The spelling of 66886260 in words is "sixty-six million, eight hundred eighty-six thousand, two hundred sixty".