66016080 has 160 divisors (see below), whose sum is σ = 244984320. Its totient is φ = 16243200.

The previous prime is 66016063. The next prime is 66016087. The reversal of 66016080 is 8061066.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66016087) 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, 26905 + ... + 29255.

It is an arithmetic number, because the mean of its divisors is an integer number (1531152).

Almost surely, 2^66016080 is an apocalyptic number.

66016080 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 66016080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122492160).

66016080 is an abundant number, since it is smaller than the sum of its proper divisors (178968240).

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

66016080 is a wasteful number, since it uses less digits than its factorization.

66016080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386 (or 2374 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 66016080 is about 8125.0279999518. The cubic root of 66016080 is about 404.1568191647.

The spelling of 66016080 in words is "sixty-six million, sixteen thousand, eighty".