671098881 has 16 divisors (see below), whose sum is σ = 938812928. Its totient is φ = 425865600.

The previous prime is 671098877. The next prime is 671098913. The reversal of 671098881 is 188890176.

It is not a de Polignac number, because 671098881 - 2² = 671098877 is a prime.

It is a super-2 number, since 2×671098881² = 900747416158904322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 671098881.

It is not an unprimeable number, because it can be changed into a prime (671098801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53476 + ... + 64821.

It is an arithmetic number, because the mean of its divisors is an integer number (58675808).

Almost surely, 2^671098881 is an apocalyptic number.

671098881 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

671098881 is a deficient number, since it is larger than the sum of its proper divisors (267714047).

671098881 is a wasteful number, since it uses less digits than its factorization.

671098881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118392.

The product of its (nonzero) digits is 193536, while the sum is 48.

The square root of 671098881 is about 25905.5762530000. The cubic root of 671098881 is about 875.5121381730.

The spelling of 671098881 in words is "six hundred seventy-one million, ninety-eight thousand, eight hundred eighty-one".