66050016 has 96 divisors (see below), whose sum is σ = 180478368. Its totient is φ = 21135360.

The previous prime is 66049999. The next prime is 66050027. The reversal of 66050016 is 61005066.

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

It is a super-2 number, since 2×66050016² = 8725209227200512, which contains 22 as substring.

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

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, 381706 + ... + 381878.

It is an arithmetic number, because the mean of its divisors is an integer number (1879983).

Almost surely, 2^66050016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66050016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90239184).

66050016 is an abundant number, since it is smaller than the sum of its proper divisors (114428352).

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

66050016 is a wasteful number, since it uses less digits than its factorization.

66050016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 66050016 is about 8127.1160936706. The cubic root of 66050016 is about 404.2260604581.

The spelling of 66050016 in words is "sixty-six million, fifty thousand, sixteen".