1670572205 has 8 divisors (see below), whose sum is σ = 2009450904. Its totient is φ = 1333281600.

The previous prime is 1670572091. The next prime is 1670572213. The reversal of 1670572205 is 5022750761.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 157828969 + 1512743236 = 12563^2 + 38894^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1670572205 - 2²⁰ = 1669523629 is a prime.

It is a super-2 number, since 2×1670572205² = 5581622984237124050, which contains 22 as substring.

It is a Duffinian number.

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, 394706 + ... + 398915.

It is an arithmetic number, because the mean of its divisors is an integer number (251181363).

Almost surely, 2^1670572205 is an apocalyptic number.

It is an amenable number.

1670572205 is a deficient number, since it is larger than the sum of its proper divisors (338878699).

1670572205 is an equidigital number, since it uses as much as digits as its factorization.

1670572205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794047.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 1670572205 is about 40872.6339376361. The cubic root of 1670572205 is about 1186.5564845920.

The spelling of 1670572205 in words is "one billion, six hundred seventy million, five hundred seventy-two thousand, two hundred five".