671001097 has 4 divisors (see below), whose sum is σ = 722616580. Its totient is φ = 619385616.

The previous prime is 671001083. The next prime is 671001137. The reversal of 671001097 is 790100176.

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 191434896 + 479566201 = 13836^2 + 21899^2 .

It is a cyclic number.

It is not a de Polignac number, because 671001097 - 2⁷ = 671000969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671001007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25807722 + ... + 25807747.

It is an arithmetic number, because the mean of its divisors is an integer number (180654145).

Almost surely, 2^671001097 is an apocalyptic number.

It is an amenable number.

671001097 is a deficient number, since it is larger than the sum of its proper divisors (51615483).

671001097 is a wasteful number, since it uses less digits than its factorization.

671001097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51615482.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 671001097 is about 25903.6888685762. The cubic root of 671001097 is about 875.4696132736.

The spelling of 671001097 in words is "six hundred seventy-one million, one thousand, ninety-seven".