671151643 has 8 divisors (see below), whose sum is σ = 693155840. Its totient is φ = 649169640.

The previous prime is 671151641. The next prime is 671151647. The reversal of 671151643 is 346151176.

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 671151643 - 2¹ = 671151641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671151599 and 671151608.

It is not an unprimeable number, because it can be changed into a prime (671151641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74446 + ... + 82972.

It is an arithmetic number, because the mean of its divisors is an integer number (86644480).

Almost surely, 2^671151643 is an apocalyptic number.

671151643 is a deficient number, since it is larger than the sum of its proper divisors (22004197).

671151643 is a wasteful number, since it uses less digits than its factorization.

671151643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11097.

The product of its digits is 15120, while the sum is 34.

The square root of 671151643 is about 25906.5945851631. The cubic root of 671151643 is about 875.5350819161.

The spelling of 671151643 in words is "six hundred seventy-one million, one hundred fifty-one thousand, six hundred forty-three".