7649657589 has 24 divisors (see below), whose sum is σ = 11975685408. Its totient is φ = 4330371360.

The previous prime is 7649657579. The next prime is 7649657591. The reversal of 7649657589 is 9857569467.

It is not a de Polignac number, because 7649657589 - 2⁴ = 7649657573 is a prime.

It is a super-2 number, since 2×7649657589² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7649657549) 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 23 ways as a sum of consecutive naturals, for example, 227442 + ... + 258899.

It is an arithmetic number, because the mean of its divisors is an integer number (498986892).

Almost surely, 2^7649657589 is an apocalyptic number.

It is an amenable number.

7649657589 is a deficient number, since it is larger than the sum of its proper divisors (4326027819).

7649657589 is a wasteful number, since it uses less digits than its factorization.

7649657589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486465 (or 486458 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 66.

The square root of 7649657589 is about 87462.3209673743. The cubic root of 7649657589 is about 1970.3679377520.

The spelling of 7649657589 in words is "seven billion, six hundred forty-nine million, six hundred fifty-seven thousand, five hundred eighty-nine".