7664329973 has 4 divisors (see below), whose sum is σ = 7665421260. Its totient is φ = 7663238688.

The previous prime is 7664329969. The next prime is 7664329987. The reversal of 7664329973 is 3799234667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3799234667 = 31 ⋅122555957.

It can be written as a sum of positive squares in 2 ways, for example, as 3426580369 + 4237749604 = 58537^2 + 65098^2 .

It is a cyclic number.

It is not a de Polignac number, because 7664329973 - 2² = 7664329969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7664329913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535040 + ... + 549177.

It is an arithmetic number, because the mean of its divisors is an integer number (1916355315).

Almost surely, 2^7664329973 is an apocalyptic number.

It is an amenable number.

7664329973 is a deficient number, since it is larger than the sum of its proper divisors (1091287).

7664329973 is a wasteful number, since it uses less digits than its factorization.

7664329973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091286.

The product of its digits is 10287648, while the sum is 56.

The square root of 7664329973 is about 87546.1590990718. The cubic root of 7664329973 is about 1971.6268843469.

The spelling of 7664329973 in words is "seven billion, six hundred sixty-four million, three hundred twenty-nine thousand, nine hundred seventy-three".