671401153 has 4 divisors (see below), whose sum is σ = 673173040. Its totient is φ = 669629268.

The previous prime is 671401151. The next prime is 671401189. The reversal of 671401153 is 351104176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671401153 - 2¹ = 671401151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671401151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885375 + ... + 886132.

It is an arithmetic number, because the mean of its divisors is an integer number (168293260).

Almost surely, 2^671401153 is an apocalyptic number.

It is an amenable number.

671401153 is a deficient number, since it is larger than the sum of its proper divisors (1771887).

671401153 is a wasteful number, since it uses less digits than its factorization.

671401153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771886.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 671401153 is about 25911.4097069225. The cubic root of 671401153 is about 875.6435659400.

The spelling of 671401153 in words is "six hundred seventy-one million, four hundred one thousand, one hundred fifty-three".