671043699 has 12 divisors (see below), whose sum is σ = 1011428496. Its totient is φ = 427911792.

The previous prime is 671043689. The next prime is 671043727. The reversal of 671043699 is 996340176.

It is not a de Polignac number, because 671043699 - 2⁴ = 671043683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671043689) 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 in 11 ways as a sum of consecutive naturals, for example, 1620672 + ... + 1621085.

It is an arithmetic number, because the mean of its divisors is an integer number (84285708).

Almost surely, 2^671043699 is an apocalyptic number.

671043699 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

671043699 is a deficient number, since it is larger than the sum of its proper divisors (340384797).

671043699 is a wasteful number, since it uses less digits than its factorization.

671043699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241786 (or 3241783 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 671043699 is about 25904.5111708366. The cubic root of 671043699 is about 875.4881407978.

The spelling of 671043699 in words is "six hundred seventy-one million, forty-three thousand, six hundred ninety-nine".