670849869 has 8 divisors (see below), whose sum is σ = 947082240. Its totient is φ = 420925376.

The previous prime is 670849859. The next prime is 670849877. The reversal of 670849869 is 968948076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 670849869 - 2⁹ = 670849357 is a prime.

It is a super-2 number, since 2×670849869² = 900079093474634322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670849859) 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 7 ways as a sum of consecutive naturals, for example, 6576909 + ... + 6577010.

It is an arithmetic number, because the mean of its divisors is an integer number (118385280).

Almost surely, 2^670849869 is an apocalyptic number.

It is an amenable number.

670849869 is a deficient number, since it is larger than the sum of its proper divisors (276232371).

670849869 is a wasteful number, since it uses less digits than its factorization.

670849869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13153939.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The square root of 670849869 is about 25900.7696603788. The cubic root of 670849869 is about 875.4038381868.

The spelling of 670849869 in words is "six hundred seventy million, eight hundred forty-nine thousand, eight hundred sixty-nine".