106538666 has 16 divisors (see below), whose sum is σ = 172360104. Its totient is φ = 49097664.

The previous prime is 106538659. The next prime is 106538683. The reversal of 106538666 is 666835601.

106538666 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 4 ways, for example, as 64561225 + 41977441 = 8035^2 + 6479^2 .

It is a super-2 number, since 2×106538666² = 22700974706119112, which contains 22 as substring.

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, 16976 + ... + 22388.

Almost surely, 2^106538666 is an apocalyptic number.

106538666 is a deficient number, since it is larger than the sum of its proper divisors (65821438).

106538666 is a wasteful number, since it uses less digits than its factorization.

106538666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6185.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 106538666 is about 10321.7569240900. The cubic root of 106538666 is about 474.0626627026.

The spelling of 106538666 in words is "one hundred six million, five hundred thirty-eight thousand, six hundred sixty-six".