674785216 has 112 divisors (see below), whose sum is σ = 1660623552. Its totient is φ = 265420800.

The previous prime is 674785193. The next prime is 674785219. The reversal of 674785216 is 612587476.

It is a happy number.

674785216 is a nontrivial binomial coefficient, being equal to C(36737, 2).

It is a tau number, because it is divible by the number of its divisors (112).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674785219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311176 + ... + 313336.

It is an arithmetic number, because the mean of its divisors is an integer number (14826996).

Almost surely, 2^674785216 is an apocalyptic number.

674785216 is the 36736-th triangular number.

674785216 is the 12246-th centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674785216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830311776).

674785216 is an abundant number, since it is smaller than the sum of its proper divisors (985838336).

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

674785216 is a wasteful number, since it uses less digits than its factorization.

674785216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238 (or 2228 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 674785216 is about 25976.6282646536. The cubic root of 674785216 is about 877.1122697823.

The spelling of 674785216 in words is "six hundred seventy-four million, seven hundred eighty-five thousand, two hundred sixteen".