1663666214 has 32 divisors (see below), whose sum is σ = 2902195200. Its totient is φ = 700539840.

The previous prime is 1663666159. The next prime is 1663666217. The reversal of 1663666214 is 4126663661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663666217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229802 + ... + 236930.

It is an arithmetic number, because the mean of its divisors is an integer number (90693600).

Almost surely, 2^1663666214 is an apocalyptic number.

1663666214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1663666214 is a deficient number, since it is larger than the sum of its proper divisors (1238528986).

1663666214 is a wasteful number, since it uses less digits than its factorization.

1663666214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7428.

The product of its digits is 186624, while the sum is 41.

The square root of 1663666214 is about 40788.0646022829. The cubic root of 1663666214 is about 1184.9191881131.

The spelling of 1663666214 in words is "one billion, six hundred sixty-three million, six hundred sixty-six thousand, two hundred fourteen".