671774190 has 16 divisors (see below), whose sum is σ = 1612258128. Its totient is φ = 179139776.

The previous prime is 671774171. The next prime is 671774197. The reversal of 671774190 is 91477176.

671774190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×671774190² = 902561124700312200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671774197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11196207 + ... + 11196266.

It is an arithmetic number, because the mean of its divisors is an integer number (100766133).

Almost surely, 2^671774190 is an apocalyptic number.

671774190 is an abundant number, since it is smaller than the sum of its proper divisors (940483938).

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

671774190 is a wasteful number, since it uses less digits than its factorization.

671774190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22392483.

The product of its (nonzero) digits is 74088, while the sum is 42.

The square root of 671774190 is about 25918.6070227549. The cubic root of 671774190 is about 875.8057079371.

The spelling of 671774190 in words is "six hundred seventy-one million, seven hundred seventy-four thousand, one hundred ninety".