670771885 has 64 divisors (see below), whose sum is σ = 1011916800. Its totient is φ = 416731392.

The previous prime is 670771879. The next prime is 670771889. The reversal of 670771885 is 588177076.

It is not a de Polignac number, because 670771885 - 2¹¹ = 670769837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670771889) 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 63 ways as a sum of consecutive naturals, for example, 1377112 + ... + 1377598.

It is an arithmetic number, because the mean of its divisors is an integer number (15811200).

Almost surely, 2^670771885 is an apocalyptic number.

It is an amenable number.

670771885 is a deficient number, since it is larger than the sum of its proper divisors (341144915).

670771885 is a wasteful number, since it uses less digits than its factorization.

670771885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610.

The product of its (nonzero) digits is 658560, while the sum is 49.

The square root of 670771885 is about 25899.2641787368. The cubic root of 670771885 is about 875.3699159728.

The spelling of 670771885 in words is "six hundred seventy million, seven hundred seventy-one thousand, eight hundred eighty-five".