6471492720 has 480 divisors, whose sum is σ = 26808641280. Its totient is φ = 1273466880.

The previous prime is 6471492707. The next prime is 6471492791. The reversal of 6471492720 is 272941746.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2456524 + ... + 2459156.

It is an arithmetic number, because the mean of its divisors is an integer number (55851336).

Almost surely, 2^6471492720 is an apocalyptic number.

6471492720 is a gapful number since it is divisible by the number (60) 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 6471492720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13404320640).

6471492720 is an abundant number, since it is smaller than the sum of its proper divisors (20337148560).

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

6471492720 is a wasteful number, since it uses less digits than its factorization.

6471492720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693 (or 2680 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 6471492720 is about 80445.5885676772. The cubic root of 6471492720 is about 1863.5232790842.

The spelling of 6471492720 in words is "six billion, four hundred seventy-one million, four hundred ninety-two thousand, seven hundred twenty".