1670720268 has 36 divisors (see below), whose sum is σ = 4534813752. Its totient is φ = 477348480.

The previous prime is 1670720263. The next prime is 1670720269. The reversal of 1670720268 is 8620270761.

It is not an unprimeable number, because it can be changed into a prime (1670720263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1420093 + ... + 1421268.

Almost surely, 2^1670720268 is an apocalyptic number.

It is an amenable number.

1670720268 is an abundant number, since it is smaller than the sum of its proper divisors (2864093484).

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

1670720268 is a wasteful number, since it uses less digits than its factorization.

1670720268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841382 (or 2841373 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 1670720268 is about 40874.4451705464. The cubic root of 1670720268 is about 1186.5915384341.

The spelling of 1670720268 in words is "one billion, six hundred seventy million, seven hundred twenty thousand, two hundred sixty-eight".