860605440 has 176 divisors, whose sum is σ = 2818768128. Its totient is φ = 223985664.

The previous prime is 860605429. The next prime is 860605481. The reversal of 860605440 is 44506068.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659829 + ... + 661131.

It is an arithmetic number, because the mean of its divisors is an integer number (16015728).

Almost surely, 2^860605440 is an apocalyptic number.

860605440 is a gapful number since it is divisible by the number (80) 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 860605440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1409384064).

860605440 is an abundant number, since it is smaller than the sum of its proper divisors (1958162688).

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

860605440 is a wasteful number, since it uses less digits than its factorization.

860605440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 860605440 is about 29336.0774474025. The cubic root of 860605440 is about 951.1916495756.

The spelling of 860605440 in words is "eight hundred sixty million, six hundred five thousand, four hundred forty".