6240643453 has 4 divisors (see below), whose sum is σ = 6807974688. Its totient is φ = 5673312220.

The previous prime is 6240643427. The next prime is 6240643457. The reversal of 6240643453 is 3543460426.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6240643453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6240643457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283665601 + ... + 283665622.

It is an arithmetic number, because the mean of its divisors is an integer number (1701993672).

Almost surely, 2^6240643453 is an apocalyptic number.

It is an amenable number.

6240643453 is a deficient number, since it is larger than the sum of its proper divisors (567331235).

6240643453 is a wasteful number, since it uses less digits than its factorization.

6240643453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567331234.

The product of its (nonzero) digits is 207360, while the sum is 37.

The square root of 6240643453 is about 78997.7433411867. The cubic root of 6240643453 is about 1841.0960952090.

The spelling of 6240643453 in words is "six billion, two hundred forty million, six hundred forty-three thousand, four hundred fifty-three".