670263645 has 16 divisors (see below), whose sum is σ = 1088429760. Its totient is φ = 352137984.

The previous prime is 670263637. The next prime is 670263647. The reversal of 670263645 is 546362076.

It is not a de Polignac number, because 670263645 - 2³ = 670263637 is a prime.

It is a super-3 number, since 3×670263645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670263647) 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 15 ways as a sum of consecutive naturals, for example, 332460 + ... + 334469.

It is an arithmetic number, because the mean of its divisors is an integer number (68026860).

Almost surely, 2^670263645 is an apocalyptic number.

It is an amenable number.

670263645 is a deficient number, since it is larger than the sum of its proper divisors (418166115).

670263645 is a wasteful number, since it uses less digits than its factorization.

670263645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667004.

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 670263645 is about 25889.4504576671. The cubic root of 670263645 is about 875.1487725265.

The spelling of 670263645 in words is "six hundred seventy million, two hundred sixty-three thousand, six hundred forty-five".