40006673 has 4 divisors (see below), whose sum is σ = 45721920. Its totient is φ = 34291428.

The previous prime is 40006663. The next prime is 40006697. The reversal of 40006673 is 37660004.

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 a cyclic number.

It is not a de Polignac number, because 40006673 - 2¹⁰ = 40005649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40006663) 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, 2857613 + ... + 2857626.

It is an arithmetic number, because the mean of its divisors is an integer number (11430480).

Almost surely, 2^40006673 is an apocalyptic number.

It is an amenable number.

40006673 is a deficient number, since it is larger than the sum of its proper divisors (5715247).

40006673 is an equidigital number, since it uses as much as digits as its factorization.

40006673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715246.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 40006673 is about 6325.0828453072. The cubic root of 40006673 is about 342.0142060604.

Adding to 40006673 its reverse (37660004), we get a palindrome (77666677).

The spelling of 40006673 in words is "forty million, six thousand, six hundred seventy-three".