106602561 has 40 divisors (see below), whose sum is σ = 174170304. Its totient is φ = 64579680.

The previous prime is 106602541. The next prime is 106602569. The reversal of 106602561 is 165206601.

It is a happy number.

106602561 is a `hidden beast` number, since 1 + 0 + 6 + 602 + 56 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-106602561 is a prime.

It is a super-2 number, since 2×106602561² = 22728212023517442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (106602569) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 69796 + ... + 71306.

Almost surely, 2^106602561 is an apocalyptic number.

It is an amenable number.

106602561 is a deficient number, since it is larger than the sum of its proper divisors (67567743).

106602561 is a wasteful number, since it uses less digits than its factorization.

106602561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 106602561 is about 10324.8516212099. The cubic root of 106602561 is about 474.1574144693.

The spelling of 106602561 in words is "one hundred six million, six hundred two thousand, five hundred sixty-one".