100061665 has 16 divisors (see below), whose sum is σ = 131518080. Its totient is φ = 72478720.

The previous prime is 100061659. The next prime is 100061669. The reversal of 100061665 is 566160001.

It is not a de Polignac number, because 100061665 - 2¹⁹ = 99537377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100061669) 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, 10596 + ... + 17674.

It is an arithmetic number, because the mean of its divisors is an integer number (8219880).

Almost surely, 2^100061665 is an apocalyptic number.

It is an amenable number.

100061665 is a deficient number, since it is larger than the sum of its proper divisors (31456415).

100061665 is a wasteful number, since it uses less digits than its factorization.

100061665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7352.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 100061665 is about 10003.0827748250. The cubic root of 100061665 is about 464.2542716154.

The spelling of 100061665 in words is "one hundred million, sixty-one thousand, six hundred sixty-five".