74216 has 8 divisors (see below), whose sum is σ = 139170. Its totient is φ = 37104.

The previous prime is 74209. The next prime is 74219. The reversal of 74216 is 61247.

It can be written as a sum of positive squares in only one way, i.e., 52900 + 21316 = 230^2 + 146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (74219) by changing a digit.

74216 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4631 + ... + 4646.

2⁷⁴²¹⁶ is an apocalyptic number.

It is an amenable number.

74216 is a deficient number, since it is larger than the sum of its proper divisors (64954).

74216 is a wasteful number, since it uses less digits than its factorization.

74216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9283 (or 9279 counting only the distinct ones).

The product of its digits is 336, while the sum is 20.

The square root of 74216 is about 272.4261367784. The cubic root of 74216 is about 42.0241735368.

The spelling of 74216 in words is "seventy-four thousand, two hundred sixteen".