2665567406 has 8 divisors (see below), whose sum is σ = 4053123264. Its totient is φ = 1314526320.

The previous prime is 2665567381. The next prime is 2665567409. The reversal of 2665567406 is 6047655662.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665567409) 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, 9128510 + ... + 9128801.

It is an arithmetic number, because the mean of its divisors is an integer number (506640408).

Almost surely, 2^2665567406 is an apocalyptic number.

2665567406 is a deficient number, since it is larger than the sum of its proper divisors (1387555858).

2665567406 is a wasteful number, since it uses less digits than its factorization.

2665567406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18257386.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The square root of 2665567406 is about 51629.1333066903. The cubic root of 2665567406 is about 1386.5319763186.

The spelling of 2665567406 in words is "two billion, six hundred sixty-five million, five hundred sixty-seven thousand, four hundred six".