6535706478 has 32 divisors (see below), whose sum is σ = 14977198080. Its totient is φ = 1862539680.

The previous prime is 6535706461. The next prime is 6535706479. The reversal of 6535706478 is 8746075356.

It is a self number, because there is not a number n which added to its sum of digits gives 6535706478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6535706479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183678 + ... + 216353.

It is an arithmetic number, because the mean of its divisors is an integer number (468037440).

Almost surely, 2^6535706478 is an apocalyptic number.

6535706478 is an abundant number, since it is smaller than the sum of its proper divisors (8441491602).

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

6535706478 is a wasteful number, since it uses less digits than its factorization.

6535706478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400432.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The square root of 6535706478 is about 80843.7163791967. The cubic root of 6535706478 is about 1869.6666432761. Note that the first 4 decimals are identical.

It can be divided in two parts, 653 and 5706478, that added together give a triangular number (5707131 = T₃₃₇₈).

The spelling of 6535706478 in words is "six billion, five hundred thirty-five million, seven hundred six thousand, four hundred seventy-eight".