164863674 has 40 divisors (see below), whose sum is σ = 372908448. Its totient is φ = 54435240.

The previous prime is 164863619. The next prime is 164863681. The reversal of 164863674 is 476368461.

It is a happy number.

164863674 is a `hidden beast` number, since 1 + 6 + 4 + 8 + 636 + 7 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12579 + ... + 22089.

Almost surely, 2^164863674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164863674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186454224).

164863674 is an abundant number, since it is smaller than the sum of its proper divisors (208044774).

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

164863674 is a wasteful number, since it uses less digits than its factorization.

164863674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9632 (or 9623 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 164863674 is about 12839.9249997810. The cubic root of 164863674 is about 548.3295587261.

The spelling of 164863674 in words is "one hundred sixty-four million, eight hundred sixty-three thousand, six hundred seventy-four".