7249867656 has 32 divisors (see below), whose sum is σ = 18127013760. Its totient is φ = 2416309952.

The previous prime is 7249867637. The next prime is 7249867687. The reversal of 7249867656 is 6567689427.

It is a self number, because there is not a number n which added to its sum of digits gives 7249867656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240481 + ... + 268943.

It is an arithmetic number, because the mean of its divisors is an integer number (566469180).

Almost surely, 2^7249867656 is an apocalyptic number.

It is an amenable number.

7249867656 is an abundant number, since it is smaller than the sum of its proper divisors (10877146104).

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

7249867656 is a wasteful number, since it uses less digits than its factorization.

7249867656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39085 (or 39081 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 60.

The square root of 7249867656 is about 85146.1546753581. The cubic root of 7249867656 is about 1935.4265435227.

The spelling of 7249867656 in words is "seven billion, two hundred forty-nine million, eight hundred sixty-seven thousand, six hundred fifty-six".