670270375821 has 4 divisors (see below), whose sum is σ = 893693834432. Its totient is φ = 446846917212.

The previous prime is 670270375799. The next prime is 670270375877. The reversal of 670270375821 is 128573072076.

670270375821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 670270375821 - 2¹³ = 670270367629 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 (670270375721) 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, 111711729301 + ... + 111711729306.

It is an arithmetic number, because the mean of its divisors is an integer number (223423458608).

Almost surely, 2^670270375821 is an apocalyptic number.

It is an amenable number.

670270375821 is a deficient number, since it is larger than the sum of its proper divisors (223423458611).

670270375821 is a wasteful number, since it uses less digits than its factorization.

670270375821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223423458610.

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 670270375821 in words is "six hundred seventy billion, two hundred seventy million, three hundred seventy-five thousand, eight hundred twenty-one".