671832697 has 2 divisors, whose sum is σ = 671832698. Its totient is φ = 671832696.

The previous prime is 671832671. The next prime is 671832719. The reversal of 671832697 is 796238176.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670602816 + 1229881 = 25896^2 + 1109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671832697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671832697.

It is not a weakly prime, because it can be changed into another prime (671832097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335916348 + 335916349.

It is an arithmetic number, because the mean of its divisors is an integer number (335916349).

Almost surely, 2^671832697 is an apocalyptic number.

It is an amenable number.

671832697 is a deficient number, since it is larger than the sum of its proper divisors (1).

671832697 is an equidigital number, since it uses as much as digits as its factorization.

671832697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 671832697 is about 25919.7356660904. The cubic root of 671832697 is about 875.8311327886.

The spelling of 671832697 in words is "six hundred seventy-one million, eight hundred thirty-two thousand, six hundred ninety-seven".