670123263 has 4 divisors (see below), whose sum is σ = 893497688. Its totient is φ = 446748840.

The previous prime is 670123241. The next prime is 670123301. The reversal of 670123263 is 362321076.

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

It is not a de Polignac number, because 670123263 - 2⁶ = 670123199 is a prime.

It is a super-2 number, since 2×670123263² = 898130375227534338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 670123263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670123763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111687208 + ... + 111687213.

It is an arithmetic number, because the mean of its divisors is an integer number (223374422).

Almost surely, 2^670123263 is an apocalyptic number.

670123263 is a deficient number, since it is larger than the sum of its proper divisors (223374425).

670123263 is a wasteful number, since it uses less digits than its factorization.

670123263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223374424.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 670123263 is about 25886.7391341590. The cubic root of 670123263 is about 875.0876703449.

The spelling of 670123263 in words is "six hundred seventy million, one hundred twenty-three thousand, two hundred sixty-three".