40260666 has 16 divisors (see below), whose sum is σ = 80603424. Its totient is φ = 13406544.

The previous prime is 40260659. The next prime is 40260667. The reversal of 40260666 is 66606204.

It is not an unprimeable number, because it can be changed into a prime (40260667) 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, 4296 + ... + 9948.

It is an arithmetic number, because the mean of its divisors is an integer number (5037714).

Almost surely, 2^40260666 is an apocalyptic number.

40260666 is an abundant number, since it is smaller than the sum of its proper divisors (40342758).

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

40260666 is a wasteful number, since it uses less digits than its factorization.

40260666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6845.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 40260666 is about 6345.1293131031. The cubic root of 40260666 is about 342.7364690896.

The spelling of 40260666 in words is "forty million, two hundred sixty thousand, six hundred sixty-six".