40365633 has 64 divisors (see below), whose sum is σ = 74926080. Its totient is φ = 18662400.

The previous prime is 40365629. The next prime is 40365641. The reversal of 40365633 is 33656304.

It is not a de Polignac number, because 40365633 - 2² = 40365629 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40365633.

It is not an unprimeable number, because it can be changed into a prime (40365613) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74343 + ... + 74883.

It is an arithmetic number, because the mean of its divisors is an integer number (1170720).

Almost surely, 2^40365633 is an apocalyptic number.

It is an amenable number.

40365633 is a deficient number, since it is larger than the sum of its proper divisors (34560447).

40365633 is a wasteful number, since it uses less digits than its factorization.

40365633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598.

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 40365633 is about 6353.3953914423. The cubic root of 40365633 is about 343.0340697202.

It can be divided in two parts, 4036 and 5633, that added together give a palindrome (9669).

The spelling of 40365633 in words is "forty million, three hundred sixty-five thousand, six hundred thirty-three".