66013080 has 128 divisors (see below), whose sum is σ = 229132800. Its totient is φ = 14902272.

The previous prime is 66013067. The next prime is 66013093. The reversal of 66013080 is 8031066.

It is an interprime number because it is at equal distance from previous prime (66013067) and next prime (66013093).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 66013080.

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, 74319 + ... + 75201.

It is an arithmetic number, because the mean of its divisors is an integer number (1790100).

Almost surely, 2^66013080 is an apocalyptic number.

66013080 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 66013080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114566400).

66013080 is an abundant number, since it is smaller than the sum of its proper divisors (163119720).

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

66013080 is a wasteful number, since it uses less digits than its factorization.

66013080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 66013080 is about 8124.8433831059. The cubic root of 66013080 is about 404.1506969753.

The spelling of 66013080 in words is "sixty-six million, thirteen thousand, eighty".