40740685 has 4 divisors (see below), whose sum is σ = 48888828. Its totient is φ = 32592544.

The previous prime is 40740683. The next prime is 40740691. The reversal of 40740685 is 58604704.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27102436 + 13638249 = 5206^2 + 3693^2 .

It is a cyclic number.

It is not a de Polignac number, because 40740685 - 2¹ = 40740683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40740685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40740683) 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, 4074064 + ... + 4074073.

It is an arithmetic number, because the mean of its divisors is an integer number (12222207).

Almost surely, 2^40740685 is an apocalyptic number.

It is an amenable number.

40740685 is a deficient number, since it is larger than the sum of its proper divisors (8148143).

40740685 is an equidigital number, since it uses as much as digits as its factorization.

40740685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8148142.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 40740685 is about 6382.8430185929. The cubic root of 40740685 is about 344.0932148913.

The spelling of 40740685 in words is "forty million, seven hundred forty thousand, six hundred eighty-five".