40635556 has 12 divisors (see below), whose sum is σ = 76582492. Its totient is φ = 18754848.

The previous prime is 40635499. The next prime is 40635557. The reversal of 40635556 is 65553604.

It can be written as a sum of positive squares in 2 ways, for example, as 26316900 + 14318656 = 5130^2 + 3784^2 .

It is a super-2 number, since 2×40635556² = 3302496822858272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40635557) 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, 390675 + ... + 390778.

Almost surely, 2^40635556 is an apocalyptic number.

It is an amenable number.

40635556 is a deficient number, since it is larger than the sum of its proper divisors (35946936).

40635556 is a wasteful number, since it uses less digits than its factorization.

40635556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781470 (or 781468 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 40635556 is about 6374.6024189748. The cubic root of 40635556 is about 343.7969890145.

The spelling of 40635556 in words is "forty million, six hundred thirty-five thousand, five hundred fifty-six".