671055967 has 2 divisors, whose sum is σ = 671055968. Its totient is φ = 671055966.

The previous prime is 671055961. The next prime is 671055971. The reversal of 671055967 is 769550176.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671055967 is a prime.

It is a super-2 number, since 2×671055967² = 900632221692610178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671055961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335527983 + 335527984.

It is an arithmetic number, because the mean of its divisors is an integer number (335527984).

Almost surely, 2^671055967 is an apocalyptic number.

671055967 is a deficient number, since it is larger than the sum of its proper divisors (1).

671055967 is an equidigital number, since it uses as much as digits as its factorization.

671055967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 671055967 is about 25904.7479624875. The cubic root of 671055967 is about 875.4934759809.

The spelling of 671055967 in words is "six hundred seventy-one million, fifty-five thousand, nine hundred sixty-seven".