34665666 has 64 divisors (see below), whose sum is σ = 81887232. Its totient is φ = 9580032.

The previous prime is 34665661. The next prime is 34665667. The reversal of 34665666 is 66656643.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (34665661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272895 + ... + 273021.

It is an arithmetic number, because the mean of its divisors is an integer number (1279488).

Almost surely, 2^34665666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34665666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40943616).

34665666 is an abundant number, since it is smaller than the sum of its proper divisors (47221566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34665666 is a wasteful number, since it uses less digits than its factorization.

34665666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303.

The product of its digits is 466560, while the sum is 42.

The square root of 34665666 is about 5887.7555995473. The cubic root of 34665666 is about 326.0617457410.

The spelling of 34665666 in words is "thirty-four million, six hundred sixty-five thousand, six hundred sixty-six".