106645599 has 16 divisors (see below), whose sum is σ = 158255200. Its totient is φ = 70979328.

The previous prime is 106645579. The next prime is 106645603. The reversal of 106645599 is 995546601.

It is a happy number.

106645599 is a `hidden beast` number, since 10 + 6 + 6 + 45 + 599 = 666.

It is not a de Polignac number, because 106645599 - 2⁹ = 106645087 is a prime.

It is a super-2 number, since 2×106645599² = 22746567572137602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106645579) 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, 15237 + ... + 21105.

It is an arithmetic number, because the mean of its divisors is an integer number (9890950).

Almost surely, 2^106645599 is an apocalyptic number.

106645599 is a deficient number, since it is larger than the sum of its proper divisors (51609601).

106645599 is an equidigital number, since it uses as much as digits as its factorization.

106645599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551 (or 6545 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 106645599 is about 10326.9356054930. The cubic root of 106645599 is about 474.2212154418.

It can be divided in two parts, 1066 and 45599, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 106645599 in words is "one hundred six million, six hundred forty-five thousand, five hundred ninety-nine".