16670220706 has 8 divisors (see below), whose sum is σ = 26476232940. Its totient is φ = 7844809728.

The previous prime is 16670220649. The next prime is 16670220737. The reversal of 16670220706 is 60702207661.

It can be written as a sum of positive squares in 2 ways, for example, as 15991878681 + 678342025 = 126459^2 + 26045^2 .

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

It is a super-2 number, since 2×16670220706² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245150271 + ... + 245150338.

Almost surely, 2^16670220706 is an apocalyptic number.

16670220706 is a deficient number, since it is larger than the sum of its proper divisors (9806012234).

16670220706 is a wasteful number, since it uses less digits than its factorization.

16670220706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490300628.

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 16670220706 in words is "sixteen billion, six hundred seventy million, two hundred twenty thousand, seven hundred six".