40666522 has 8 divisors (see below), whose sum is σ = 65692116. Its totient is φ = 18769152.

The previous prime is 40666511. The next prime is 40666541. The reversal of 40666522 is 22566604.

It can be written as a sum of positive squares in 2 ways, for example, as 39803481 + 863041 = 6309^2 + 929^2 .

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, 782023 + ... + 782074.

Almost surely, 2^40666522 is an apocalyptic number.

40666522 is a deficient number, since it is larger than the sum of its proper divisors (25025594).

40666522 is a wasteful number, since it uses less digits than its factorization.

40666522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564112.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 40666522 is about 6377.0308137879. The cubic root of 40666522 is about 343.8842960884.

The spelling of 40666522 in words is "forty million, six hundred sixty-six thousand, five hundred twenty-two".