40655616 has 36 divisors (see below), whose sum is σ = 108205272. Its totient is φ = 13551616.

The previous prime is 40655591. The next prime is 40655617. The reversal of 40655616 is 61655604.

It is a super-2 number, since 2×40655616² = 3305758224678912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40655617) 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, 25701 + ... + 27236.

It is an arithmetic number, because the mean of its divisors is an integer number (3005702).

Almost surely, 2^40655616 is an apocalyptic number.

It is an amenable number.

40655616 is an abundant number, since it is smaller than the sum of its proper divisors (67549656).

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

40655616 is an equidigital number, since it uses as much as digits as its factorization.

40655616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52956 (or 52942 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 40655616 is about 6376.1756563006. The cubic root of 40655616 is about 343.8535522295.

The spelling of 40655616 in words is "forty million, six hundred fifty-five thousand, six hundred sixteen".