1611666670 has 8 divisors (see below), whose sum is σ = 2901000024. Its totient is φ = 644666664.

The previous prime is 1611666629. The next prime is 1611666673. The reversal of 1611666670 is 766661161.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611666673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80583324 + ... + 80583343.

It is an arithmetic number, because the mean of its divisors is an integer number (362625003).

Almost surely, 2^1611666670 is an apocalyptic number.

1611666670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1611666670 is a deficient number, since it is larger than the sum of its proper divisors (1289333354).

1611666670 is a wasteful number, since it uses less digits than its factorization.

1611666670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161166674.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1611666670 is about 40145.5684976561. The cubic root of 1611666670 is about 1172.4430094003.

The spelling of 1611666670 in words is "one billion, six hundred eleven million, six hundred sixty-six thousand, six hundred seventy".