670653071 has 4 divisors (see below), whose sum is σ = 731621544. Its totient is φ = 609684600.

The previous prime is 670653047. The next prime is 670653073. The reversal of 670653071 is 170356076.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670653071 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 (670653073) 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, 30484220 + ... + 30484241.

It is an arithmetic number, because the mean of its divisors is an integer number (182905386).

Almost surely, 2^670653071 is an apocalyptic number.

670653071 is a deficient number, since it is larger than the sum of its proper divisors (60968473).

670653071 is a wasteful number, since it uses less digits than its factorization.

670653071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60968472.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 670653071 is about 25896.9703054238. The cubic root of 670653071 is about 875.3182280866.

The spelling of 670653071 in words is "six hundred seventy million, six hundred fifty-three thousand, seventy-one".