40666436 has 6 divisors (see below), whose sum is σ = 71166270. Its totient is φ = 20333216.

The previous prime is 40666427. The next prime is 40666453. The reversal of 40666436 is 63466604.

It can be written as a sum of positive squares in only one way, i.e., 32993536 + 7672900 = 5744^2 + 2770^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40666396 and 40666405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5083301 + ... + 5083308.

It is an arithmetic number, because the mean of its divisors is an integer number (11861045).

Almost surely, 2^40666436 is an apocalyptic number.

It is an amenable number.

40666436 is a deficient number, since it is larger than the sum of its proper divisors (30499834).

40666436 is a wasteful number, since it uses less digits than its factorization.

40666436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10166613 (or 10166611 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 40666436 is about 6377.0240708343. The cubic root of 40666436 is about 343.8840536771.

The spelling of 40666436 in words is "forty million, six hundred sixty-six thousand, four hundred thirty-six".