670221040 has 40 divisors (see below), whose sum is σ = 1587675168. Its totient is φ = 263028480.

The previous prime is 670221031. The next prime is 670221089. The reversal of 670221040 is 40122076.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74796 + ... + 83275.

Almost surely, 2^670221040 is an apocalyptic number.

It is an amenable number.

670221040 is an abundant number, since it is smaller than the sum of its proper divisors (917454128).

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

670221040 is a wasteful number, since it uses less digits than its factorization.

670221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158137 (or 158131 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 670221040 is about 25888.6276190917. The cubic root of 670221040 is about 875.1302293240.

The spelling of 670221040 in words is "six hundred seventy million, two hundred twenty-one thousand, forty".