101959661 has 8 divisors (see below), whose sum is σ = 104618304. Its totient is φ = 99309280.

The previous prime is 101959639. The next prime is 101959699. The reversal of 101959661 is 166959101.

It is a happy number.

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 101959661 - 2²² = 97765357 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 (101953661) 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, 28790 + ... + 32136.

It is an arithmetic number, because the mean of its divisors is an integer number (13077288).

Almost surely, 2^101959661 is an apocalyptic number.

It is an amenable number.

101959661 is a deficient number, since it is larger than the sum of its proper divisors (2658643).

101959661 is an equidigital number, since it uses as much as digits as its factorization.

101959661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 101959661 is about 10097.5076627849. The cubic root of 101959661 is about 467.1712709008.

The spelling of 101959661 in words is "one hundred one million, nine hundred fifty-nine thousand, six hundred sixty-one".