670206344 has 8 divisors (see below), whose sum is σ = 1256636910. Its totient is φ = 335103168.

The previous prime is 670206337. The next prime is 670206347. The reversal of 670206344 is 443602076.

It can be written as a sum of positive squares in only one way, i.e., 621903844 + 48302500 = 24938^2 + 6950^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 670206344.

It is not an unprimeable number, because it can be changed into a prime (670206347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41887889 + ... + 41887904.

Almost surely, 2^670206344 is an apocalyptic number.

It is an amenable number.

670206344 is a deficient number, since it is larger than the sum of its proper divisors (586430566).

670206344 is a wasteful number, since it uses less digits than its factorization.

670206344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83775799 (or 83775795 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 670206344 is about 25888.3437863452. The cubic root of 670206344 is about 875.1238329229.

The spelling of 670206344 in words is "six hundred seventy million, two hundred six thousand, three hundred forty-four".