40765664 has 24 divisors (see below), whose sum is σ = 80622360. Its totient is φ = 20290176.

The previous prime is 40765661. The next prime is 40765667. The reversal of 40765664 is 46656704.

It is an interprime number because it is at equal distance from previous prime (40765661) and next prime (40765667).

It is a super-2 number, since 2×40765664² = 3323678722721792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40765661) 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, 4547 + ... + 10109.

It is an arithmetic number, because the mean of its divisors is an integer number (3359265).

Almost surely, 2^40765664 is an apocalyptic number.

It is an amenable number.

40765664 is a deficient number, since it is larger than the sum of its proper divisors (39856696).

40765664 is a wasteful number, since it uses less digits than its factorization.

40765664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5802 (or 5794 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 40765664 is about 6384.7994486906. The cubic root of 40765664 is about 344.1635242016.

The spelling of 40765664 in words is "forty million, seven hundred sixty-five thousand, six hundred sixty-four".