671386023 has 64 divisors (see below), whose sum is σ = 1266647040. Its totient is φ = 341301600.

The previous prime is 671386019. The next prime is 671386073. The reversal of 671386023 is 320683176.

It is a happy number.

It is not a de Polignac number, because 671386023 - 2² = 671386019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671386013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 94278 + ... + 101148.

It is an arithmetic number, because the mean of its divisors is an integer number (19791360).

Almost surely, 2^671386023 is an apocalyptic number.

671386023 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

671386023 is a deficient number, since it is larger than the sum of its proper divisors (595261017).

671386023 is a wasteful number, since it uses less digits than its factorization.

671386023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945 (or 6939 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 671386023 is about 25911.1177489509. The cubic root of 671386023 is about 875.6369883589.

The spelling of 671386023 in words is "six hundred seventy-one million, three hundred eighty-six thousand, twenty-three".