671093261 has 8 divisors (see below), whose sum is σ = 684793440. Its totient is φ = 657431632.

The previous prime is 671093257. The next prime is 671093299. The reversal of 671093261 is 162390176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671093261 - 2² = 671093257 is a prime.

It is a super-2 number, since 2×671093261² = 900732329919228242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671093201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26930 + ... + 45468.

It is an arithmetic number, because the mean of its divisors is an integer number (85599180).

Almost surely, 2^671093261 is an apocalyptic number.

It is an amenable number.

671093261 is a deficient number, since it is larger than the sum of its proper divisors (13700179).

671093261 is a wasteful number, since it uses less digits than its factorization.

671093261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19275.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 671093261 is about 25905.4677819182. The cubic root of 671093261 is about 875.5096942252.

The spelling of 671093261 in words is "six hundred seventy-one million, ninety-three thousand, two hundred sixty-one".