868739580 has 72 divisors (see below), whose sum is σ = 2732791152. Its totient is φ = 231662592.

The previous prime is 868739569. The next prime is 868739581. The reversal of 868739580 is 85937868.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868739581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84517 + ... + 94236.

Almost surely, 2^868739580 is an apocalyptic number.

It is an amenable number.

868739580 is an abundant number, since it is smaller than the sum of its proper divisors (1864051572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868739580 is a wasteful number, since it uses less digits than its factorization.

868739580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178777 (or 178763 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 868739580 is about 29474.3885432760. The cubic root of 868739580 is about 954.1790336830.

The spelling of 868739580 in words is "eight hundred sixty-eight million, seven hundred thirty-nine thousand, five hundred eighty".