671098913 has 2 divisors, whose sum is σ = 671098914. Its totient is φ = 671098912.

The previous prime is 671098877. The next prime is 671098921. The reversal of 671098913 is 319890176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 489604129 + 181494784 = 22127^2 + 13472^2 .

It is a cyclic number.

It is not a de Polignac number, because 671098913 - 2⁶ = 671098849 is a prime.

It is not a weakly prime, because it can be changed into another prime (671098993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335549456 + 335549457.

It is an arithmetic number, because the mean of its divisors is an integer number (335549457).

Almost surely, 2^671098913 is an apocalyptic number.

It is an amenable number.

671098913 is a deficient number, since it is larger than the sum of its proper divisors (1).

671098913 is an equidigital number, since it uses as much as digits as its factorization.

671098913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 671098913 is about 25905.5768706277. The cubic root of 671098913 is about 875.5121520887.

The spelling of 671098913 in words is "six hundred seventy-one million, ninety-eight thousand, nine hundred thirteen".