5671997 has 4 divisors (see below), whose sum is σ = 5703516. Its totient is φ = 5640480.

The previous prime is 5671993. The next prime is 5672011. The reversal of 5671997 is 7991765.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2524921 + 3147076 = 1589^2 + 1774^2 .

It is a cyclic number.

It is not a de Polignac number, because 5671997 - 2² = 5671993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5671993) 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, 15488 + ... + 15849.

It is an arithmetic number, because the mean of its divisors is an integer number (1425879).

Almost surely, 2^5671997 is an apocalyptic number.

It is an amenable number.

5671997 is a deficient number, since it is larger than the sum of its proper divisors (31519).

5671997 is a wasteful number, since it uses less digits than its factorization.

5671997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31518.

The product of its digits is 119070, while the sum is 44.

The square root of 5671997 is about 2381.5954736269. The cubic root of 5671997 is about 178.3385908913.

The spelling of 5671997 in words is "five million, six hundred seventy-one thousand, nine hundred ninety-seven".