671066667 has 8 divisors (see below), whose sum is σ = 994172880. Its totient is φ = 447377760.

The previous prime is 671066633. The next prime is 671066717. The reversal of 671066667 is 766660176.

It is not a de Polignac number, because 671066667 - 2⁸ = 671066411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671067667) 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, 12427134 + ... + 12427187.

It is an arithmetic number, because the mean of its divisors is an integer number (124271610).

Almost surely, 2^671066667 is an apocalyptic number.

671066667 is a deficient number, since it is larger than the sum of its proper divisors (323106213).

671066667 is a wasteful number, since it uses less digits than its factorization.

671066667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24854330 (or 24854324 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 671066667 is about 25904.9544875107. The cubic root of 671066667 is about 875.4981292095.

The spelling of 671066667 in words is "six hundred seventy-one million, sixty-six thousand, six hundred sixty-seven".