6690329447 has 16 divisors (see below), whose sum is σ = 7572180672. Its totient is φ = 5876090880.

The previous prime is 6690329441. The next prime is 6690329453. The reversal of 6690329447 is 7449230966.

It is an interprime number because it is at equal distance from previous prime (6690329441) and next prime (6690329453).

It is a cyclic number.

It is not a de Polignac number, because 6690329447 - 2¹² = 6690325351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6690329395 and 6690329404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690329441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192638 + ... + 224699.

It is an arithmetic number, because the mean of its divisors is an integer number (473261292).

Almost surely, 2^6690329447 is an apocalyptic number.

6690329447 is a deficient number, since it is larger than the sum of its proper divisors (881851225).

6690329447 is a wasteful number, since it uses less digits than its factorization.

6690329447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417418.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The square root of 6690329447 is about 81794.4340832553. The cubic root of 6690329447 is about 1884.2961812704.

The spelling of 6690329447 in words is "six billion, six hundred ninety million, three hundred twenty-nine thousand, four hundred forty-seven".