40662644 has 12 divisors (see below), whose sum is σ = 77628768. Its totient is φ = 18483000.

The previous prime is 40662637. The next prime is 40662647. The reversal of 40662644 is 44626604.

It is a self number, because there is not a number n which added to its sum of digits gives 40662644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40662647) 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, 462032 + ... + 462119.

It is an arithmetic number, because the mean of its divisors is an integer number (6469064).

Almost surely, 2^40662644 is an apocalyptic number.

40662644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40662644 is a deficient number, since it is larger than the sum of its proper divisors (36966124).

40662644 is a wasteful number, since it uses less digits than its factorization.

40662644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924166 (or 924164 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 40662644 is about 6376.7267465370. The cubic root of 40662644 is about 343.8733646914.

The spelling of 40662644 in words is "forty million, six hundred sixty-two thousand, six hundred forty-four".