40680406 has 16 divisors (see below), whose sum is σ = 69174000. Its totient is φ = 17787168.

The previous prime is 40680403. The next prime is 40680407. The reversal of 40680406 is 60408604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40680403) 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, 40681 + ... + 41668.

It is an arithmetic number, because the mean of its divisors is an integer number (4323375).

Almost surely, 2^40680406 is an apocalyptic number.

40680406 is a deficient number, since it is larger than the sum of its proper divisors (28493594).

40680406 is a wasteful number, since it uses less digits than its factorization.

40680406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82383.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40680406 is about 6378.1193152841. The cubic root of 40680406 is about 343.9234269351.

The spelling of 40680406 in words is "forty million, six hundred eighty thousand, four hundred six".