670220735 has 4 divisors (see below), whose sum is σ = 804264888. Its totient is φ = 536176584.

The previous prime is 670220731. The next prime is 670220777. The reversal of 670220735 is 537022076.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 670220735 - 2² = 670220731 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 (670220731) 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, 67022069 + ... + 67022078.

It is an arithmetic number, because the mean of its divisors is an integer number (201066222).

Almost surely, 2^670220735 is an apocalyptic number.

670220735 is a deficient number, since it is larger than the sum of its proper divisors (134044153).

670220735 is a wasteful number, since it uses less digits than its factorization.

670220735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134044152.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 670220735 is about 25888.6217284737. The cubic root of 670220735 is about 875.1300965744.

The spelling of 670220735 in words is "six hundred seventy million, two hundred twenty thousand, seven hundred thirty-five".