163396674 has 72 divisors (see below), whose sum is σ = 418715388. Its totient is φ = 45904320.

The previous prime is 163396661. The next prime is 163396679. The reversal of 163396674 is 476693361.

163396674 is a `hidden beast` number, since 1 + 633 + 9 + 6 + 6 + 7 + 4 = 666.

163396674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 161417025 + 1979649 = 12705^2 + 1407^2 .

It is not an unprimeable number, because it can be changed into a prime (163396679) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 52284 + ... + 55320.

Almost surely, 2^163396674 is an apocalyptic number.

163396674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163396674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209357694).

163396674 is an abundant number, since it is smaller than the sum of its proper divisors (255318714).

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

163396674 is a wasteful number, since it uses less digits than its factorization.

163396674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120 (or 3110 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 163396674 is about 12782.6708476750. The cubic root of 163396674 is about 546.6983175375.

The spelling of 163396674 in words is "one hundred sixty-three million, three hundred ninety-six thousand, six hundred seventy-four".