6664611254 has 16 divisors (see below), whose sum is σ = 11703708576. Its totient is φ = 2786596800.

The previous prime is 6664611253. The next prime is 6664611257. The reversal of 6664611254 is 4521164666.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664611251) 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, 5804837 + ... + 5805984.

It is an arithmetic number, because the mean of its divisors is an integer number (731481786).

Almost surely, 2^6664611254 is an apocalyptic number.

6664611254 is a deficient number, since it is larger than the sum of its proper divisors (5039097322).

6664611254 is a wasteful number, since it uses less digits than its factorization.

6664611254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11610871.

The product of its digits is 207360, while the sum is 41.

The square root of 6664611254 is about 81637.0703418490. The cubic root of 6664611254 is about 1881.8786161432.

The spelling of 6664611254 in words is "six billion, six hundred sixty-four million, six hundred eleven thousand, two hundred fifty-four".