1665414897 has 8 divisors (see below), whose sum is σ = 2272194144. Its totient is φ = 1084456128.

The previous prime is 1665414893. The next prime is 1665414899. The reversal of 1665414897 is 7984145661.

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

It is not a de Polignac number, because 1665414897 - 2² = 1665414893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1665414893) 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, 6454968 + ... + 6455225.

It is an arithmetic number, because the mean of its divisors is an integer number (284024268).

Almost surely, 2^1665414897 is an apocalyptic number.

It is an amenable number.

1665414897 is a deficient number, since it is larger than the sum of its proper divisors (606779247).

1665414897 is a wasteful number, since it uses less digits than its factorization.

1665414897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12910239.

The product of its digits is 1451520, while the sum is 51.

The square root of 1665414897 is about 40809.4951818814. The cubic root of 1665414897 is about 1185.3341997440.

The spelling of 1665414897 in words is "one billion, six hundred sixty-five million, four hundred fourteen thousand, eight hundred ninety-seven".