670965437 has 4 divisors (see below), whose sum is σ = 689099676. Its totient is φ = 652831200.

The previous prime is 670965433. The next prime is 670965439. The reversal of 670965437 is 734569076.

It is a happy number.

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 498673561 + 172291876 = 22331^2 + 13126^2 .

It is a cyclic number.

It is not a de Polignac number, because 670965437 - 2² = 670965433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670965391 and 670965400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670965433) 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, 9067064 + ... + 9067137.

It is an arithmetic number, because the mean of its divisors is an integer number (172274919).

Almost surely, 2^670965437 is an apocalyptic number.

It is an amenable number.

670965437 is a deficient number, since it is larger than the sum of its proper divisors (18134239).

670965437 is a wasteful number, since it uses less digits than its factorization.

670965437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18134238.

The product of its (nonzero) digits is 952560, while the sum is 47.

The square root of 670965437 is about 25903.0005404779. Note that the first 3 decimals coincide. The cubic root of 670965437 is about 875.4541042083.

The spelling of 670965437 in words is "six hundred seventy million, nine hundred sixty-five thousand, four hundred thirty-seven".