40645910 has 16 divisors (see below), whose sum is σ = 73918656. Its totient is φ = 16090368.

The previous prime is 40645901. The next prime is 40645919. The reversal of 40645910 is 1954604.

It is an interprime number because it is at equal distance from previous prime (40645901) and next prime (40645919).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40645919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19982 + ... + 21921.

It is an arithmetic number, because the mean of its divisors is an integer number (4619916).

Almost surely, 2^40645910 is an apocalyptic number.

40645910 is a deficient number, since it is larger than the sum of its proper divisors (33272746).

40645910 is a wasteful number, since it uses less digits than its factorization.

40645910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42007.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40645910 is about 6375.4144963288. The cubic root of 40645910 is about 343.8261865292.

The spelling of 40645910 in words is "forty million, six hundred forty-five thousand, nine hundred ten".