671127716 has 18 divisors (see below), whose sum is σ = 1366224678. Its totient is φ = 287626080.

The previous prime is 671127707. The next prime is 671127731. The reversal of 671127716 is 617721176.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 642825316 + 28302400 = 25354^2 + 5320^2 .

It is a super-2 number, since 2×671127716² = 900824822366753312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 671127716.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1711865 + ... + 1712256.

It is an arithmetic number, because the mean of its divisors is an integer number (75901371).

Almost surely, 2^671127716 is an apocalyptic number.

It is an amenable number.

671127716 is an abundant number, since it is smaller than the sum of its proper divisors (695096962).

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

671127716 is a wasteful number, since it uses less digits than its factorization.

671127716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424139 (or 3424130 counting only the distinct ones).

The product of its digits is 24696, while the sum is 38.

The square root of 671127716 is about 25906.1327874309. The cubic root of 671127716 is about 875.5246773242.

The spelling of 671127716 in words is "six hundred seventy-one million, one hundred twenty-seven thousand, seven hundred sixteen".