6251261660 has 24 divisors (see below), whose sum is σ = 15003028320. Its totient is φ = 2143289664.

The previous prime is 6251261659. The next prime is 6251261713. The reversal of 6251261660 is 661621526.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 6251261660.

It is a congruent number.

It is an unprimeable number.

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, 22325795 + ... + 22326074.

It is an arithmetic number, because the mean of its divisors is an integer number (625126180).

Almost surely, 2^6251261660 is an apocalyptic number.

It is an amenable number.

6251261660 is an abundant number, since it is smaller than the sum of its proper divisors (8751766660).

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

6251261660 is a wasteful number, since it uses less digits than its factorization.

6251261660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44651885 (or 44651883 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 6251261660 is about 79064.9205400220. The cubic root of 6251261660 is about 1842.1396875191.

The spelling of 6251261660 in words is "six billion, two hundred fifty-one million, two hundred sixty-one thousand, six hundred sixty".