40565697 has 16 divisors (see below), whose sum is σ = 54902400. Its totient is φ = 26640000.

The previous prime is 40565683. The next prime is 40565699. The reversal of 40565697 is 79656504.

It is not a de Polignac number, because 40565697 - 2⁶ = 40565633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40565699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67197 + ... + 67797.

It is an arithmetic number, because the mean of its divisors is an integer number (3431400).

Almost surely, 2^40565697 is an apocalyptic number.

It is an amenable number.

40565697 is a deficient number, since it is larger than the sum of its proper divisors (14336703).

40565697 is a wasteful number, since it uses less digits than its factorization.

40565697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 40565697 is about 6369.1205829376. The cubic root of 40565697 is about 343.5998620599.

The spelling of 40565697 in words is "forty million, five hundred sixty-five thousand, six hundred ninety-seven".