6734387520 has 336 divisors, whose sum is σ = 27637922880. Its totient is φ = 1539191808.

The previous prime is 6734387489. The next prime is 6734387563. The reversal of 6734387520 is 257834376.

6734387520 is a `hidden beast` number, since 6 + 7 + 3 + 43 + 87 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 415407 + ... + 431313.

Almost surely, 2^6734387520 is an apocalyptic number.

6734387520 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 6734387520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13818961440).

6734387520 is an abundant number, since it is smaller than the sum of its proper divisors (20903535360).

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

6734387520 is a wasteful number, since it uses less digits than its factorization.

6734387520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15947 (or 15924 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The square root of 6734387520 is about 82063.3140934486. The cubic root of 6734387520 is about 1888.4233765165.

The spelling of 6734387520 in words is "six billion, seven hundred thirty-four million, three hundred eighty-seven thousand, five hundred twenty".