100661061 has 8 divisors (see below), whose sum is σ = 138544384. Its totient is φ = 64942560.

The previous prime is 100661051. The next prime is 100661081. The reversal of 100661061 is 160166001.

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

It is not a de Polignac number, because 100661061 - 2⁶ = 100660997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100661051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541096 + ... + 541281.

It is an arithmetic number, because the mean of its divisors is an integer number (17318048).

Almost surely, 2^100661061 is an apocalyptic number.

It is an amenable number.

100661061 is a deficient number, since it is larger than the sum of its proper divisors (37883323).

100661061 is a wasteful number, since it uses less digits than its factorization.

100661061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082411.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 100661061 is about 10032.9986046047. The cubic root of 100661061 is about 465.1794289630.

The spelling of 100661061 in words is "one hundred million, six hundred sixty-one thousand, sixty-one".