671183587 has 4 divisors (see below), whose sum is σ = 682559640. Its totient is φ = 659807536.

The previous prime is 671183581. The next prime is 671183593. The reversal of 671183587 is 785381176.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (671183581) and next prime (671183593).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671183587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671183581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5687938 + ... + 5688055.

It is an arithmetic number, because the mean of its divisors is an integer number (170639910).

Almost surely, 2^671183587 is an apocalyptic number.

671183587 is a deficient number, since it is larger than the sum of its proper divisors (11376053).

671183587 is a wasteful number, since it uses less digits than its factorization.

671183587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11376052.

The product of its digits is 282240, while the sum is 46.

The square root of 671183587 is about 25907.2111003867. The cubic root of 671183587 is about 875.5489722936.

The spelling of 671183587 in words is "six hundred seventy-one million, one hundred eighty-three thousand, five hundred eighty-seven".