774216 has 24 divisors (see below), whose sum is σ = 2097030. Its totient is φ = 258048.

The previous prime is 774199. The next prime is 774217. The reversal of 774216 is 612477.

It can be written as a sum of positive squares in only one way, i.e., 476100 + 298116 = 690^2 + 546^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 774216.

It is not an unprimeable number, because it can be changed into a prime (774217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5305 + ... + 5448.

2⁷⁷⁴²¹⁶ is an apocalyptic number.

It is an amenable number.

774216 is an abundant number, since it is smaller than the sum of its proper divisors (1322814).

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

774216 is a wasteful number, since it uses less digits than its factorization.

774216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10765 (or 10758 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 774216 is about 879.8954483346. The cubic root of 774216 is about 91.8235433086.

It can be divided in two parts, 774 and 216, that added together give a triangular number (990 = T₄₄).

The spelling of 774216 in words is "seven hundred seventy-four thousand, two hundred sixteen".