7664313121 has 8 divisors (see below), whose sum is σ = 7741408064. Its totient is φ = 7587270000.

The previous prime is 7664313103. The next prime is 7664313127. The reversal of 7664313121 is 1213134667.

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

It is a cyclic number.

It is not a de Polignac number, because 7664313121 - 2¹¹ = 7664311073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664313127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329371 + ... + 351871.

It is an arithmetic number, because the mean of its divisors is an integer number (967676008).

Almost surely, 2^7664313121 is an apocalyptic number.

It is an amenable number.

7664313121 is a deficient number, since it is larger than the sum of its proper divisors (77094943).

7664313121 is a wasteful number, since it uses less digits than its factorization.

7664313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25911.

The product of its digits is 18144, while the sum is 34.

The square root of 7664313121 is about 87546.0628526492. The cubic root of 7664313121 is about 1971.6254393030.

Adding to 7664313121 its reverse (1213134667), we get a palindrome (8877447788).

The spelling of 7664313121 in words is "seven billion, six hundred sixty-four million, three hundred thirteen thousand, one hundred twenty-one".