6534645340 has 48 divisors (see below), whose sum is σ = 13946339232. Its totient is φ = 2571376896.

The previous prime is 6534645323. The next prime is 6534645349. The reversal of 6534645340 is 435464356.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6534645293 and 6534645302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6534645349) 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, 1140162 + ... + 1145878.

It is an arithmetic number, because the mean of its divisors is an integer number (290548734).

Almost surely, 2^6534645340 is an apocalyptic number.

It is an amenable number.

6534645340 is an abundant number, since it is smaller than the sum of its proper divisors (7411693892).

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

6534645340 is a wasteful number, since it uses less digits than its factorization.

6534645340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6646 (or 6644 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 40.

The square root of 6534645340 is about 80837.1532155852. The cubic root of 6534645340 is about 1869.5654513742.

The spelling of 6534645340 in words is "six billion, five hundred thirty-four million, six hundred forty-five thousand, three hundred forty".