662064666 has 16 divisors (see below), whose sum is σ = 1325214624. Its totient is φ = 220507344.

The previous prime is 662064661. The next prime is 662064713. The reversal of 662064666 is 666460266.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (662064661) 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, 37180 + ... + 52023.

It is an arithmetic number, because the mean of its divisors is an integer number (82825914).

Almost surely, 2^662064666 is an apocalyptic number.

662064666 is an abundant number, since it is smaller than the sum of its proper divisors (663149958).

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

662064666 is a wasteful number, since it uses less digits than its factorization.

662064666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90445.

The product of its (nonzero) digits is 373248, while the sum is 42.

The square root of 662064666 is about 25730.6172875817. The cubic root of 662064666 is about 871.5657127145.

The spelling of 662064666 in words is "six hundred sixty-two million, sixty-four thousand, six hundred sixty-six".