7645220565 has 8 divisors (see below), whose sum is σ = 12232352928. Its totient is φ = 4077450960.

The previous prime is 7645220563. The next prime is 7645220567. The reversal of 7645220565 is 5650225467.

It is an interprime number because it is at equal distance from previous prime (7645220563) and next prime (7645220567).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7645220565 - 2¹ = 7645220563 is a prime.

It is a super-4 number, since 4×7645220565⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7645220563) 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 7 ways as a sum of consecutive naturals, for example, 254840671 + ... + 254840700.

It is an arithmetic number, because the mean of its divisors is an integer number (1529044116).

Almost surely, 2^7645220565 is an apocalyptic number.

It is an amenable number.

7645220565 is a deficient number, since it is larger than the sum of its proper divisors (4587132363).

7645220565 is a wasteful number, since it uses less digits than its factorization.

7645220565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509681379.

The product of its (nonzero) digits is 504000, while the sum is 42.

The square root of 7645220565 is about 87436.9519425283. The cubic root of 7645220565 is about 1969.9869071596.

The spelling of 7645220565 in words is "seven billion, six hundred forty-five million, two hundred twenty thousand, five hundred sixty-five".