665061466 has 8 divisors (see below), whose sum is σ = 1031992020. Its totient is φ = 321064128.

The previous prime is 665061409. The next prime is 665061469. The reversal of 665061466 is 664160566.

It can be written as a sum of positive squares in 2 ways, for example, as 661981441 + 3080025 = 25729^2 + 1755^2 .

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

It is not an unprimeable number, because it can be changed into a prime (665061469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5733231 + ... + 5733346.

Almost surely, 2^665061466 is an apocalyptic number.

665061466 is a deficient number, since it is larger than the sum of its proper divisors (366930554).

665061466 is a wasteful number, since it uses less digits than its factorization.

665061466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11466608.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 665061466 is about 25788.7856635399. The cubic root of 665061466 is about 872.8787652782.

The spelling of 665061466 in words is "six hundred sixty-five million, sixty-one thousand, four hundred sixty-six".