670581439 has 24 divisors (see below), whose sum is σ = 788317056. Its totient is φ = 565488000.

The previous prime is 670581419. The next prime is 670581449. The reversal of 670581439 is 934185076.

It is not a de Polignac number, because 670581439 - 2¹¹ = 670579391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670581395 and 670581404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670581409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224224 + ... + 227194.

It is an arithmetic number, because the mean of its divisors is an integer number (32846544).

Almost surely, 2^670581439 is an apocalyptic number.

670581439 is a deficient number, since it is larger than the sum of its proper divisors (117735617).

670581439 is a wasteful number, since it uses less digits than its factorization.

670581439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087 (or 3070 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 670581439 is about 25895.5872495682. The cubic root of 670581439 is about 875.2870629281.

The spelling of 670581439 in words is "six hundred seventy million, five hundred eighty-one thousand, four hundred thirty-nine".