840660480 has 480 divisors, whose sum is σ = 3309216768. Its totient is φ = 195379200.

The previous prime is 840660467. The next prime is 840660493. The reversal of 840660480 is 84066048.

840660480 is a `hidden beast` number, since 8 + 40 + 6 + 604 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (840660467) and next prime (840660493).

It is a tau number, because it is divible by the number of its divisors (480).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7856587 + ... + 7856693.

Almost surely, 2^840660480 is an apocalyptic number.

840660480 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 840660480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1654608384).

840660480 is an abundant number, since it is smaller than the sum of its proper divisors (2468556288).

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

840660480 is a wasteful number, since it uses less digits than its factorization.

840660480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 840660480 is about 28994.1456159688. The cubic root of 840660480 is about 943.7860283016.

It can be divided in two parts, 8406 and 60480, that added together give a palindrome (68886).

The spelling of 840660480 in words is "eight hundred forty million, six hundred sixty thousand, four hundred eighty".