100661097 has 8 divisors (see below), whose sum is σ = 142109856. Its totient is φ = 63159872.

The previous prime is 100661083. The next prime is 100661101. The reversal of 100661097 is 790166001.

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

It is a cyclic number.

It is not a de Polignac number, because 100661097 - 2⁴ = 100661081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100661017) 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, 986823 + ... + 986924.

It is an arithmetic number, because the mean of its divisors is an integer number (17763732).

Almost surely, 2^100661097 is an apocalyptic number.

100661097 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

100661097 is a deficient number, since it is larger than the sum of its proper divisors (41448759).

100661097 is a wasteful number, since it uses less digits than its factorization.

100661097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973767.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 100661097 is about 10033.0003986843. Note that the first 3 decimals coincide. The cubic root of 100661097 is about 465.1794844179.

The spelling of 100661097 in words is "one hundred million, six hundred sixty-one thousand, ninety-seven".