6240643532 has 24 divisors (see below), whose sum is σ = 10993219776. Its totient is φ = 3099753728.

The previous prime is 6240643531. The next prime is 6240643553. The reversal of 6240643532 is 2353460426.

It is a junction number, because it is equal to n+sod(n) for n = 6240643492 and 6240643501.

It is not an unprimeable number, because it can be changed into a prime (6240643531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071773 + ... + 1077579.

It is an arithmetic number, because the mean of its divisors is an integer number (458050824).

Almost surely, 2^6240643532 is an apocalyptic number.

It is an amenable number.

6240643532 is a deficient number, since it is larger than the sum of its proper divisors (4752576244).

6240643532 is a wasteful number, since it uses less digits than its factorization.

6240643532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7537 (or 7535 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

The square root of 6240643532 is about 78997.7438412009. The cubic root of 6240643532 is about 1841.0961029778.

The spelling of 6240643532 in words is "six billion, two hundred forty million, six hundred forty-three thousand, five hundred thirty-two".