670721202 has 64 divisors (see below), whose sum is σ = 1511502720. Its totient is φ = 220449600.

The previous prime is 670721197. The next prime is 670721203. The reversal of 670721202 is 202127076.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (670721203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1592952 + ... + 1593372.

It is an arithmetic number, because the mean of its divisors is an integer number (23617230).

Almost surely, 2^670721202 is an apocalyptic number.

670721202 is an abundant number, since it is smaller than the sum of its proper divisors (840781518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670721202 is a wasteful number, since it uses less digits than its factorization.

670721202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 670721202 is about 25898.2856961614. The cubic root of 670721202 is about 875.3478679950.

Adding to 670721202 its reverse (202127076), we get a palindrome (872848278).

The spelling of 670721202 in words is "six hundred seventy million, seven hundred twenty-one thousand, two hundred two".