6750778572 has 96 divisors (see below), whose sum is σ = 18238852800. Its totient is φ = 2156668416.

The previous prime is 6750778549. The next prime is 6750778577. The reversal of 6750778572 is 2758770576.

6750778572 is a `hidden beast` number, since 67 + 5 + 0 + 7 + 7 + 8 + 572 = 666.

It is a super-2 number, since 2×6750778572² = 91146022656348718368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6750778577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421218 + ... + 436950.

It is an arithmetic number, because the mean of its divisors is an integer number (189988050).

Almost surely, 2^6750778572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6750778572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9119426400).

6750778572 is an abundant number, since it is smaller than the sum of its proper divisors (11488074228).

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

6750778572 is a wasteful number, since it uses less digits than its factorization.

6750778572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15912 (or 15904 counting only the distinct ones).

The product of its (nonzero) digits is 5762400, while the sum is 54.

The square root of 6750778572 is about 82163.1217274514. The cubic root of 6750778572 is about 1889.9542342156.

The spelling of 6750778572 in words is "six billion, seven hundred fifty million, seven hundred seventy-eight thousand, five hundred seventy-two".