40320653 has 8 divisors (see below), whose sum is σ = 40934208. Its totient is φ = 39710304.

The previous prime is 40320629. The next prime is 40320661. The reversal of 40320653 is 35602304.

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

It is a cyclic number.

It is not a de Polignac number, because 40320653 - 2¹² = 40316557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40320613) 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, 37400 + ... + 38462.

It is an arithmetic number, because the mean of its divisors is an integer number (5116776).

Almost surely, 2^40320653 is an apocalyptic number.

It is an amenable number.

40320653 is a deficient number, since it is larger than the sum of its proper divisors (613555).

40320653 is a wasteful number, since it uses less digits than its factorization.

40320653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 40320653 is about 6349.8545652637. The cubic root of 40320653 is about 342.9066064466.

Adding to 40320653 its reverse (35602304), we get a palindrome (75922957).

The spelling of 40320653 in words is "forty million, three hundred twenty thousand, six hundred fifty-three".