671041040 has 20 divisors (see below), whose sum is σ = 1560170604. Its totient is φ = 268416384.

The previous prime is 671041037. The next prime is 671041067. The reversal of 671041040 is 40140176.

It can be written as a sum of positive squares in 2 ways, for example, as 301786384 + 369254656 = 17372^2 + 19216^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 671040997 and 671041015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4193927 + ... + 4194086.

Almost surely, 2^671041040 is an apocalyptic number.

It is an amenable number.

671041040 is an abundant number, since it is smaller than the sum of its proper divisors (889129564).

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

671041040 is a wasteful number, since it uses less digits than its factorization.

671041040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8388026 (or 8388020 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 671041040 is about 25904.4598476787. The cubic root of 671041040 is about 875.4869844270.

The spelling of 671041040 in words is "six hundred seventy-one million, forty-one thousand, forty".