40771646 has 4 divisors (see below), whose sum is σ = 61157472. Its totient is φ = 20385822.

The previous prime is 40771639. The next prime is 40771667. The reversal of 40771646 is 64617704.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10192910 + ... + 10192913.

It is an arithmetic number, because the mean of its divisors is an integer number (15289368).

Almost surely, 2^40771646 is an apocalyptic number.

40771646 is a deficient number, since it is larger than the sum of its proper divisors (20385826).

40771646 is a wasteful number, since it uses less digits than its factorization.

40771646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20385825.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 40771646 is about 6385.2678878807. The cubic root of 40771646 is about 344.1803576942.

The spelling of 40771646 in words is "forty million, seven hundred seventy-one thousand, six hundred forty-six".