6246262640 has 20 divisors (see below), whose sum is σ = 14522560824. Its totient is φ = 2498505024.

The previous prime is 6246262637. The next prime is 6246262657. The reversal of 6246262640 is 462626426.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 6246262594 and 6246262603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39039062 + ... + 39039221.

Almost surely, 2^6246262640 is an apocalyptic number.

It is an amenable number.

6246262640 is an abundant number, since it is smaller than the sum of its proper divisors (8276298184).

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

6246262640 is a wasteful number, since it uses less digits than its factorization.

6246262640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78078296 (or 78078290 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 6246262640 is about 79033.3008294605. The cubic root of 6246262640 is about 1841.6485147255.

The spelling of 6246262640 in words is "six billion, two hundred forty-six million, two hundred sixty-two thousand, six hundred forty".