40648585 has 8 divisors (see below), whose sum is σ = 49135176. Its totient is φ = 32280960.

The previous prime is 40648583. The next prime is 40648609. The reversal of 40648585 is 58584604.

It can be written as a sum of positive squares in 4 ways, for example, as 541696 + 40106889 = 736^2 + 6333^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40648585 - 2¹ = 40648583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40648583) 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, 28986 + ... + 30355.

It is an arithmetic number, because the mean of its divisors is an integer number (6141897).

Almost surely, 2^40648585 is an apocalyptic number.

It is an amenable number.

40648585 is a deficient number, since it is larger than the sum of its proper divisors (8486591).

40648585 is a wasteful number, since it uses less digits than its factorization.

40648585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59483.

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 40648585 is about 6375.6242831585. The cubic root of 40648585 is about 343.8337290255.

The spelling of 40648585 in words is "forty million, six hundred forty-eight thousand, five hundred eighty-five".