40778606 has 24 divisors (see below), whose sum is σ = 67765896. Its totient is φ = 18251520.

The previous prime is 40778587. The next prime is 40778623. The reversal of 40778606 is 60687704.

It is a self number, because there is not a number n which added to its sum of digits gives 40778606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206900 + ... + 207096.

It is an arithmetic number, because the mean of its divisors is an integer number (2823579).

Almost surely, 2^40778606 is an apocalyptic number.

40778606 is a deficient number, since it is larger than the sum of its proper divisors (26987290).

40778606 is a wasteful number, since it uses less digits than its factorization.

40778606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 40778606 is about 6385.8128691655. The cubic root of 40778606 is about 344.1999412302.

The spelling of 40778606 in words is "forty million, seven hundred seventy-eight thousand, six hundred six".