106685690 has 16 divisors (see below), whose sum is σ = 196718760. Its totient is φ = 41633280.

The previous prime is 106685681. The next prime is 106685729. The reversal of 106685690 is 96586601.

It can be written as a sum of positive squares in 4 ways, for example, as 82646281 + 24039409 = 9091^2 + 4903^2 .

It is a super-2 number, since 2×106685690² = 22763672901552200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129695 + ... + 130514.

Almost surely, 2^106685690 is an apocalyptic number.

106685690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

106685690 is a deficient number, since it is larger than the sum of its proper divisors (90033070).

106685690 is a wasteful number, since it uses less digits than its factorization.

106685690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260257.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 106685690 is about 10328.8765119930. The cubic root of 106685690 is about 474.2806322424.

The spelling of 106685690 in words is "one hundred six million, six hundred eighty-five thousand, six hundred ninety".