8265750621 has 4 divisors (see below), whose sum is σ = 11021000832. Its totient is φ = 5510500412.

The previous prime is 8265750617. The next prime is 8265750673. The reversal of 8265750621 is 1260575628.

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 not a de Polignac number, because 8265750621 - 2² = 8265750617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8265550621) 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 3 ways as a sum of consecutive naturals, for example, 1377625101 + ... + 1377625106.

It is an arithmetic number, because the mean of its divisors is an integer number (2755250208).

Almost surely, 2^8265750621 is an apocalyptic number.

It is an amenable number.

8265750621 is a deficient number, since it is larger than the sum of its proper divisors (2755250211).

8265750621 is a wasteful number, since it uses less digits than its factorization.

8265750621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755250210.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 8265750621 is about 90916.1735941411. The cubic root of 8265750621 is about 2021.9050926425.

The spelling of 8265750621 in words is "eight billion, two hundred sixty-five million, seven hundred fifty thousand, six hundred twenty-one".