671610601 has 2 divisors, whose sum is σ = 671610602. Its totient is φ = 671610600.

The previous prime is 671610581. The next prime is 671610631. The reversal of 671610601 is 106016176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520934976 + 150675625 = 22824^2 + 12275^2 .

It is a cyclic number.

It is not a de Polignac number, because 671610601 - 2⁹ = 671610089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671610601.

It is not a weakly prime, because it can be changed into another prime (671610631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335805300 + 335805301.

It is an arithmetic number, because the mean of its divisors is an integer number (335805301).

Almost surely, 2^671610601 is an apocalyptic number.

It is an amenable number.

671610601 is a deficient number, since it is larger than the sum of its proper divisors (1).

671610601 is an equidigital number, since it uses as much as digits as its factorization.

671610601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 671610601 is about 25915.4510090023. The cubic root of 671610601 is about 875.7346107275.

Adding to 671610601 its reverse (106016176), we get a palindrome (777626777).

The spelling of 671610601 in words is "six hundred seventy-one million, six hundred ten thousand, six hundred one".