40627645 has 4 divisors (see below), whose sum is σ = 48753180. Its totient is φ = 32502112.

The previous prime is 40627633. The next prime is 40627649. The reversal of 40627645 is 54672604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16949689 + 23677956 = 4117^2 + 4866^2 .

It is a cyclic number.

It is not a de Polignac number, because 40627645 - 2⁹ = 40627133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40627645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40627649) 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, 4062760 + ... + 4062769.

It is an arithmetic number, because the mean of its divisors is an integer number (12188295).

Almost surely, 2^40627645 is an apocalyptic number.

It is an amenable number.

40627645 is a deficient number, since it is larger than the sum of its proper divisors (8125535).

40627645 is an equidigital number, since it uses as much as digits as its factorization.

40627645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8125534.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 40627645 is about 6373.9818794848. The cubic root of 40627645 is about 343.7746772367.

The spelling of 40627645 in words is "forty million, six hundred twenty-seven thousand, six hundred forty-five".