671155207 has 8 divisors (see below), whose sum is σ = 694620000. Its totient is φ = 647711904.

The previous prime is 671155169. The next prime is 671155229. The reversal of 671155207 is 702551176.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671155207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671155607) 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, 83113 + ... + 90829.

It is an arithmetic number, because the mean of its divisors is an integer number (86827500).

Almost surely, 2^671155207 is an apocalyptic number.

671155207 is a deficient number, since it is larger than the sum of its proper divisors (23464793).

671155207 is a wasteful number, since it uses less digits than its factorization.

671155207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10745.

The product of its (nonzero) digits is 14700, while the sum is 34.

The square root of 671155207 is about 25906.6633706466. The cubic root of 671155207 is about 875.5366316908.

The spelling of 671155207 in words is "six hundred seventy-one million, one hundred fifty-five thousand, two hundred seven".