6665674407 has 8 divisors (see below), whose sum is σ = 10157218176. Its totient is φ = 3808956792.

The previous prime is 6665674399. The next prime is 6665674409. The reversal of 6665674407 is 7044765666.

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

It is not a de Polignac number, because 6665674407 - 2³ = 6665674399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6665674407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665674409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158706513 + ... + 158706554.

It is an arithmetic number, because the mean of its divisors is an integer number (1269652272).

Almost surely, 2^6665674407 is an apocalyptic number.

6665674407 is a deficient number, since it is larger than the sum of its proper divisors (3491543769).

6665674407 is a wasteful number, since it uses less digits than its factorization.

6665674407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317413077.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The square root of 6665674407 is about 81643.5815419681. The cubic root of 6665674407 is about 1881.9786779194.

The spelling of 6665674407 in words is "six billion, six hundred sixty-five million, six hundred seventy-four thousand, four hundred seven".