671274019 has 16 divisors (see below), whose sum is σ = 768210912. Its totient is φ = 581073408.

The previous prime is 671274013. The next prime is 671274061. The reversal of 671274019 is 910472176.

It is a cyclic number.

It is not a de Polignac number, because 671274019 - 2⁵ = 671273987 is a prime.

It is a super-2 number, since 2×671274019² = 901217617168824722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671274013) 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, 57177 + ... + 67909.

It is an arithmetic number, because the mean of its divisors is an integer number (48013182).

Almost surely, 2^671274019 is an apocalyptic number.

671274019 is a deficient number, since it is larger than the sum of its proper divisors (96936893).

671274019 is a wasteful number, since it uses less digits than its factorization.

671274019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11046.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 671274019 is about 25908.9563471785. The cubic root of 671274019 is about 875.5882929258.

The spelling of 671274019 in words is "six hundred seventy-one million, two hundred seventy-four thousand, nineteen".