100661593 has 8 divisors (see below), whose sum is σ = 105172416. Its totient is φ = 96162000.

The previous prime is 100661567. The next prime is 100661621. The reversal of 100661593 is 395166001.

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 100661593 - 2⁹ = 100661081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100661513) 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, 19318 + ... + 23968.

It is an arithmetic number, because the mean of its divisors is an integer number (13146552).

Almost surely, 2^100661593 is an apocalyptic number.

It is an amenable number.

100661593 is a deficient number, since it is larger than the sum of its proper divisors (4510823).

100661593 is an equidigital number, since it uses as much as digits as its factorization.

100661593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5615.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 100661593 is about 10033.0251170821. The cubic root of 100661593 is about 465.1802484623.

The spelling of 100661593 in words is "one hundred million, six hundred sixty-one thousand, five hundred ninety-three".