40650660 has 120 divisors (see below), whose sum is σ = 133189056. Its totient is φ = 10359360.

The previous prime is 40650653. The next prime is 40650667. The reversal of 40650660 is 6605604.

40650660 is a `hidden beast` number, since 4 + 0 + 650 + 6 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (40650653) and next prime (40650667).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40650667) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 36715 + ... + 37805.

Almost surely, 2^40650660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40650660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66594528).

40650660 is an abundant number, since it is smaller than the sum of its proper divisors (92538396).

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

40650660 is a wasteful number, since it uses less digits than its factorization.

40650660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40650660 is about 6375.7870102443. The cubic root of 40650660 is about 343.8395795190.

The spelling of 40650660 in words is "forty million, six hundred fifty thousand, six hundred sixty".