670234745 has 4 divisors (see below), whose sum is σ = 804281700. Its totient is φ = 536187792.

The previous prime is 670234729. The next prime is 670234757. The reversal of 670234745 is 547432076.

670234745 is digitally balanced in base 6, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 70425664 + 599809081 = 8392^2 + 24491^2 .

It is a cyclic number.

It is not a de Polignac number, because 670234745 - 2⁴ = 670234729 is a prime.

It is a super-2 number, since 2×670234745² = 898429226810430050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 670234699 and 670234708.

It is an unprimeable number.

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, 67023470 + ... + 67023479.

It is an arithmetic number, because the mean of its divisors is an integer number (201070425).

Almost surely, 2^670234745 is an apocalyptic number.

It is an amenable number.

670234745 is a deficient number, since it is larger than the sum of its proper divisors (134046955).

670234745 is a wasteful number, since it uses less digits than its factorization.

670234745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134046954.

The product of its (nonzero) digits is 141120, while the sum is 38.

The square root of 670234745 is about 25888.8923092511. The cubic root of 670234745 is about 875.1361943104.

The spelling of 670234745 in words is "six hundred seventy million, two hundred thirty-four thousand, seven hundred forty-five".