670808437 has 4 divisors (see below), whose sum is σ = 722409100. Its totient is φ = 619207776.

The previous prime is 670808431. The next prime is 670808459. The reversal of 670808437 is 734808076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 173027716 + 497780721 = 13154^2 + 22311^2 .

It is a cyclic number.

It is not a de Polignac number, because 670808437 - 2³ = 670808429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670808393 and 670808402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670808431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25800312 + ... + 25800337.

It is an arithmetic number, because the mean of its divisors is an integer number (180602275).

Almost surely, 2^670808437 is an apocalyptic number.

It is an amenable number.

670808437 is a deficient number, since it is larger than the sum of its proper divisors (51600663).

670808437 is a wasteful number, since it uses less digits than its factorization.

670808437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51600662.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 670808437 is about 25899.9698262372. The cubic root of 670808437 is about 875.3858160330.

The spelling of 670808437 in words is "six hundred seventy million, eight hundred eight thousand, four hundred thirty-seven".