860455680 has 432 divisors, whose sum is σ = 3397373280. Its totient is φ = 184418304.

The previous prime is 860455657. The next prime is 860455681. The reversal of 860455680 is 86554068.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (860455681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3198586 + ... + 3198854.

It is an arithmetic number, because the mean of its divisors is an integer number (7864290).

Almost surely, 2^860455680 is an apocalyptic number.

860455680 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 860455680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698686640).

860455680 is an abundant number, since it is smaller than the sum of its proper divisors (2536917600).

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

860455680 is a wasteful number, since it uses less digits than its factorization.

860455680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 860455680 is about 29333.5248478597. The cubic root of 860455680 is about 951.1364718606.

The spelling of 860455680 in words is "eight hundred sixty million, four hundred fifty-five thousand, six hundred eighty".