281664106 has 8 divisors (see below), whose sum is σ = 422569764. Its totient is φ = 140807520.

The previous prime is 281664013. The next prime is 281664127. The reversal of 281664106 is 601466182.

It can be written as a sum of positive squares in 2 ways, for example, as 235898881 + 45765225 = 15359^2 + 6765^2 .

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

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, 10636 + ... + 26008.

Almost surely, 2^281664106 is an apocalyptic number.

281664106 is a deficient number, since it is larger than the sum of its proper divisors (140905658).

281664106 is a wasteful number, since it uses less digits than its factorization.

281664106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24536.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 281664106 is about 16782.8515455509. The cubic root of 281664106 is about 655.5067507838.

The spelling of 281664106 in words is "two hundred eighty-one million, six hundred sixty-four thousand, one hundred six".