101661393 has 8 divisors (see below), whose sum is σ = 135710848. Its totient is φ = 67693104.

The previous prime is 101661353. The next prime is 101661401. The reversal of 101661393 is 393166101.

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

It is not a de Polignac number, because 101661393 - 2¹⁴ = 101645009 is a prime.

It is a super-3 number, since 3×101661393³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101661393.

It is not an unprimeable number, because it can be changed into a prime (101661323) 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, 17305 + ... + 22422.

It is an arithmetic number, because the mean of its divisors is an integer number (16963856).

Almost surely, 2^101661393 is an apocalyptic number.

It is an amenable number.

101661393 is a deficient number, since it is larger than the sum of its proper divisors (34049455).

101661393 is an equidigital number, since it uses as much as digits as its factorization.

101661393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40583.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 101661393 is about 10082.7274583815. The cubic root of 101661393 is about 466.7152790062.

The spelling of 101661393 in words is "one hundred one million, six hundred sixty-one thousand, three hundred ninety-three".