40768569 has 8 divisors (see below), whose sum is σ = 60397920. Its totient is φ = 27179028.

The previous prime is 40768543. The next prime is 40768571. The reversal of 40768569 is 96586704.

It is not a de Polignac number, because 40768569 - 2⁵ = 40768537 is a prime.

It is a super-2 number, since 2×40768569² = 3324152436615522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40768579) 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, 754947 + ... + 755000.

It is an arithmetic number, because the mean of its divisors is an integer number (7549740).

Almost surely, 2^40768569 is an apocalyptic number.

It is an amenable number.

40768569 is a deficient number, since it is larger than the sum of its proper divisors (19629351).

40768569 is a wasteful number, since it uses less digits than its factorization.

40768569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509956 (or 1509950 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 40768569 is about 6385.0269380794. The cubic root of 40768569 is about 344.1716991475.

The spelling of 40768569 in words is "forty million, seven hundred sixty-eight thousand, five hundred sixty-nine".