40641616 has 20 divisors (see below), whose sum is σ = 80035924. Its totient is φ = 19987200.

The previous prime is 40641613. The next prime is 40641617. The reversal of 40641616 is 61614604.

It can be written as a sum of positive squares in 2 ways, for example, as 23001616 + 17640000 = 4796^2 + 4200^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40641613) 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, 19845 + ... + 21796.

Almost surely, 2^40641616 is an apocalyptic number.

It is an amenable number.

40641616 is a deficient number, since it is larger than the sum of its proper divisors (39394308).

40641616 is a wasteful number, since it uses less digits than its factorization.

40641616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41710 (or 41704 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40641616 is about 6375.0777250164. The cubic root of 40641616 is about 343.8140783685.

The spelling of 40641616 in words is "forty million, six hundred forty-one thousand, six hundred sixteen".