40645560 has 64 divisors (see below), whose sum is σ = 128361600. Its totient is φ = 10267776.

The previous prime is 40645543. The next prime is 40645567. The reversal of 40645560 is 6554604.

40645560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40645567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6634 + ... + 11193.

It is an arithmetic number, because the mean of its divisors is an integer number (2005650).

Almost surely, 2^40645560 is an apocalyptic number.

40645560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40645560 is an abundant number, since it is smaller than the sum of its proper divisors (87716040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40645560 is a wasteful number, since it uses less digits than its factorization.

40645560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17860 (or 17856 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 40645560 is about 6375.3870470741. The cubic root of 40645560 is about 343.8251996361.

The spelling of 40645560 in words is "forty million, six hundred forty-five thousand, five hundred sixty".