40637073 has 4 divisors (see below), whose sum is σ = 54182768. Its totient is φ = 27091380.

The previous prime is 40637059. The next prime is 40637099. The reversal of 40637073 is 37073604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40637073 - 2¹⁰ = 40636049 is a prime.

It is a Duffinian number.

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 40637073.

It is not an unprimeable number, because it can be changed into a prime (40637473) 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, 6772843 + ... + 6772848.

It is an arithmetic number, because the mean of its divisors is an integer number (13545692).

Almost surely, 2^40637073 is an apocalyptic number.

It is an amenable number.

40637073 is a deficient number, since it is larger than the sum of its proper divisors (13545695).

40637073 is a wasteful number, since it uses less digits than its factorization.

40637073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13545694.

The product of its (nonzero) digits is 10584, while the sum is 30.

The square root of 40637073 is about 6374.7214056773. The cubic root of 40637073 is about 343.8012671525.

The spelling of 40637073 in words is "forty million, six hundred thirty-seven thousand, seventy-three".