65057666 has 8 divisors (see below), whose sum is σ = 97630860. Its totient is φ = 32514048.

The previous prime is 65057647. The next prime is 65057683. The reversal of 65057666 is 66675056.

It can be written as a sum of positive squares in 2 ways, for example, as 43943641 + 21114025 = 6629^2 + 4595^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671 + ... + 11426.

Almost surely, 2^65057666 is an apocalyptic number.

65057666 is a deficient number, since it is larger than the sum of its proper divisors (32573194).

65057666 is a wasteful number, since it uses less digits than its factorization.

65057666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14788.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 65057666 is about 8065.8332489582. The cubic root of 65057666 is about 402.1914428534.

The spelling of 65057666 in words is "sixty-five million, fifty-seven thousand, six hundred sixty-six".