670128383 has 4 divisors (see below), whose sum is σ = 685712808. Its totient is φ = 654543960.

The previous prime is 670128373. The next prime is 670128409. The reversal of 670128383 is 383821076.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 670128383 - 2¹⁶ = 670062847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670128353) 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, 7792148 + ... + 7792233.

It is an arithmetic number, because the mean of its divisors is an integer number (171428202).

Almost surely, 2^670128383 is an apocalyptic number.

670128383 is a deficient number, since it is larger than the sum of its proper divisors (15584425).

670128383 is a wasteful number, since it uses less digits than its factorization.

670128383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15584424.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 670128383 is about 25886.8380263021. The cubic root of 670128383 is about 875.0898990082.

The spelling of 670128383 in words is "six hundred seventy million, one hundred twenty-eight thousand, three hundred eighty-three".