7629329665 has 4 divisors (see below), whose sum is σ = 9155195604. Its totient is φ = 6103463728.

The previous prime is 7629329639. The next prime is 7629329671. The reversal of 7629329665 is 5669239267.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4231372401 + 3397957264 = 65049^2 + 58292^2 .

It is a cyclic number.

It is not a de Polignac number, because 7629329665 - 2⁵ = 7629329633 is a prime.

It is a super-2 number, since 2×7629329665² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762932962 + ... + 762932971.

It is an arithmetic number, because the mean of its divisors is an integer number (2288798901).

Almost surely, 2^7629329665 is an apocalyptic number.

It is an amenable number.

7629329665 is a deficient number, since it is larger than the sum of its proper divisors (1525865939).

7629329665 is a wasteful number, since it uses less digits than its factorization.

7629329665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525865938.

The product of its digits is 7348320, while the sum is 55.

The square root of 7629329665 is about 87346.0340542145. The cubic root of 7629329665 is about 1968.6210612592.

The spelling of 7629329665 in words is "seven billion, six hundred twenty-nine million, three hundred twenty-nine thousand, six hundred sixty-five".