868652090 has 8 divisors (see below), whose sum is σ = 1563573780. Its totient is φ = 347460832.

The previous prime is 868652087. The next prime is 868652093. The reversal of 868652090 is 90256868.

It is a happy number.

868652090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (868652087) and next prime (868652093).

It can be written as a sum of positive squares in 2 ways, for example, as 784728169 + 83923921 = 28013^2 + 9161^2 .

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

It is a super-2 number, since 2×868652090² = 1509112906922736200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (868652093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43432595 + ... + 43432614.

Almost surely, 2^868652090 is an apocalyptic number.

868652090 is a deficient number, since it is larger than the sum of its proper divisors (694921690).

868652090 is a wasteful number, since it uses less digits than its factorization.

868652090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86865216.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 868652090 is about 29472.9043360168. The cubic root of 868652090 is about 954.1470010969.

The spelling of 868652090 in words is "eight hundred sixty-eight million, six hundred fifty-two thousand, ninety".