860421744 has 320 divisors, whose sum is σ = 3116467200. Its totient is φ = 221211648.

The previous prime is 860421739. The next prime is 860421763. The reversal of 860421744 is 447124068.

860421744 is a `hidden beast` number, since 8 + 604 + 2 + 1 + 7 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 860421699 and 860421708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1690162 + ... + 1690670.

It is an arithmetic number, because the mean of its divisors is an integer number (9738960).

Almost surely, 2^860421744 is an apocalyptic number.

860421744 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 860421744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558233600).

860421744 is an abundant number, since it is smaller than the sum of its proper divisors (2256045456).

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

860421744 is a wasteful number, since it uses less digits than its factorization.

860421744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 860421744 is about 29332.9463913873. The cubic root of 860421744 is about 951.1239675591.

The spelling of 860421744 in words is "eight hundred sixty million, four hundred twenty-one thousand, seven hundred forty-four".