40630645 has 32 divisors (see below), whose sum is σ = 57024000. Its totient is φ = 27478080.

The previous prime is 40630643. The next prime is 40630649. The reversal of 40630645 is 54603604.

It is not a de Polignac number, because 40630645 - 2¹ = 40630643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40630643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61326 + ... + 61984.

It is an arithmetic number, because the mean of its divisors is an integer number (1782000).

Almost surely, 2^40630645 is an apocalyptic number.

It is an amenable number.

40630645 is a deficient number, since it is larger than the sum of its proper divisors (16393355).

40630645 is a wasteful number, since it uses less digits than its factorization.

40630645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 40630645 is about 6374.2172068420. The cubic root of 40630645 is about 343.7831386234.

It can be divided in two parts, 406306 and 45, that added together give a triangular number (406351 = T₉₀₁).

The spelling of 40630645 in words is "forty million, six hundred thirty thousand, six hundred forty-five".