6619666234 has 16 divisors (see below), whose sum is σ = 10707036480. Its totient is φ = 3059151840.

The previous prime is 6619666231. The next prime is 6619666241. The reversal of 6619666234 is 4326669166.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6619666231) 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, 2122854 + ... + 2125969.

It is an arithmetic number, because the mean of its divisors is an integer number (669189780).

Almost surely, 2^6619666234 is an apocalyptic number.

6619666234 is a deficient number, since it is larger than the sum of its proper divisors (4087370246).

6619666234 is a wasteful number, since it uses less digits than its factorization.

6619666234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248885.

The product of its digits is 1679616, while the sum is 49.

The square root of 6619666234 is about 81361.3313189994. The cubic root of 6619666234 is about 1877.6387128742.

The spelling of 6619666234 in words is "six billion, six hundred nineteen million, six hundred sixty-six thousand, two hundred thirty-four".