7664541653 has 4 divisors (see below), whose sum is σ = 7710437280. Its totient is φ = 7618646028.

The previous prime is 7664541641. The next prime is 7664541671. The reversal of 7664541653 is 3561454667.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3561454667 = 439 ⋅8112653.

It is a cyclic number.

It is not a de Polignac number, because 7664541653 - 2⁶ = 7664541589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7664541598 and 7664541607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7664541623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22947563 + ... + 22947896.

It is an arithmetic number, because the mean of its divisors is an integer number (1927609320).

Almost surely, 2^7664541653 is an apocalyptic number.

It is an amenable number.

7664541653 is a deficient number, since it is larger than the sum of its proper divisors (45895627).

7664541653 is a wasteful number, since it uses less digits than its factorization.

7664541653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45895626.

The product of its digits is 1814400, while the sum is 47.

The square root of 7664541653 is about 87547.3680529575. The cubic root of 7664541653 is about 1971.6450355373.

The spelling of 7664541653 in words is "seven billion, six hundred sixty-four million, five hundred forty-one thousand, six hundred fifty-three".