40660565 has 8 divisors (see below), whose sum is σ = 53228448. Its totient is φ = 29571280.

The previous prime is 40660559. The next prime is 40660577. The reversal of 40660565 is 56506604.

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

It is not a de Polignac number, because 40660565 - 2⁸ = 40660309 is a prime.

It is a super-2 number, since 2×40660565² = 3306563092238450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369587 + ... + 369696.

It is an arithmetic number, because the mean of its divisors is an integer number (6653556).

Almost surely, 2^40660565 is an apocalyptic number.

It is an amenable number.

40660565 is a deficient number, since it is larger than the sum of its proper divisors (12567883).

40660565 is a wasteful number, since it uses less digits than its factorization.

40660565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739299.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 40660565 is about 6376.5637297842. The cubic root of 40660565 is about 343.8675040714.

The spelling of 40660565 in words is "forty million, six hundred sixty thousand, five hundred sixty-five".