861652101 has 8 divisors (see below), whose sum is σ = 1149295744. Its totient is φ = 574221600.

The previous prime is 861652097. The next prime is 861652139. The reversal of 861652101 is 101256168.

861652101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 861652101 - 2² = 861652097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861652301) 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, 43600 + ... + 60201.

It is an arithmetic number, because the mean of its divisors is an integer number (143661968).

Almost surely, 2^861652101 is an apocalyptic number.

It is an amenable number.

861652101 is a deficient number, since it is larger than the sum of its proper divisors (287643643).

861652101 is a wasteful number, since it uses less digits than its factorization.

861652101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106571.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 861652101 is about 29353.9111704045. The cubic root of 861652101 is about 951.5771037478.

The spelling of 861652101 in words is "eight hundred sixty-one million, six hundred fifty-two thousand, one hundred one".