40666576 has 40 divisors (see below), whose sum is σ = 83655360. Its totient is φ = 19109376.

The previous prime is 40666573. The next prime is 40666579. The reversal of 40666576 is 67566604.

It is an interprime number because it is at equal distance from previous prime (40666573) and next prime (40666579).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40666573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20776 + ... + 22648.

It is an arithmetic number, because the mean of its divisors is an integer number (2091384).

Almost surely, 2^40666576 is an apocalyptic number.

40666576 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40666576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41827680).

40666576 is an abundant number, since it is smaller than the sum of its proper divisors (42988784).

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

40666576 is a wasteful number, since it uses less digits than its factorization.

40666576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 40666576 is about 6377.0350477318. The cubic root of 40666576 is about 343.8844483000.

The spelling of 40666576 in words is "forty million, six hundred sixty-six thousand, five hundred seventy-six".