671146547 has 2 divisors, whose sum is σ = 671146548. Its totient is φ = 671146546.

The previous prime is 671146543. The next prime is 671146561. The reversal of 671146547 is 745641176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671146547 - 2² = 671146543 is a prime.

It is not a weakly prime, because it can be changed into another prime (671146543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335573273 + 335573274.

It is an arithmetic number, because the mean of its divisors is an integer number (335573274).

Almost surely, 2^671146547 is an apocalyptic number.

671146547 is a deficient number, since it is larger than the sum of its proper divisors (1).

671146547 is an equidigital number, since it uses as much as digits as its factorization.

671146547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 671146547 is about 25906.4962316404. The cubic root of 671146547 is about 875.5328659549.

The spelling of 671146547 in words is "six hundred seventy-one million, one hundred forty-six thousand, five hundred forty-seven".