40664533 has 8 divisors (see below), whose sum is σ = 50048768. Its totient is φ = 32174064.

The previous prime is 40664501. The next prime is 40664549. The reversal of 40664533 is 33546604.

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

It is not a de Polignac number, because 40664533 - 2⁵ = 40664501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40664495 and 40664504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40664573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223341 + ... + 223522.

It is an arithmetic number, because the mean of its divisors is an integer number (6256096).

Almost surely, 2^40664533 is an apocalyptic number.

It is an amenable number.

40664533 is a deficient number, since it is larger than the sum of its proper divisors (9384235).

40664533 is a wasteful number, since it uses less digits than its factorization.

40664533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446883.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 40664533 is about 6376.8748615603. The cubic root of 40664533 is about 343.8786895356.

The spelling of 40664533 in words is "forty million, six hundred sixty-four thousand, five hundred thirty-three".