670074457 has 4 divisors (see below), whose sum is σ = 721618660. Its totient is φ = 618530256.

The previous prime is 670074451. The next prime is 670074491. The reversal of 670074457 is 754470076.

670074457 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.

It can be written as a sum of positive squares in 2 ways, for example, as 151191616 + 518882841 = 12296^2 + 22779^2 .

It is a cyclic number.

It is not a de Polignac number, because 670074457 - 2¹⁹ = 669550169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670074451) 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, 25772082 + ... + 25772107.

It is an arithmetic number, because the mean of its divisors is an integer number (180404665).

Almost surely, 2^670074457 is an apocalyptic number.

It is an amenable number.

670074457 is a deficient number, since it is larger than the sum of its proper divisors (51544203).

670074457 is a wasteful number, since it uses less digits than its factorization.

670074457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51544202.

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 670074457 is about 25885.7964335656. The cubic root of 670074457 is about 875.0664252157.

The spelling of 670074457 in words is "six hundred seventy million, seventy-four thousand, four hundred fifty-seven".