40516645 has 32 divisors (see below), whose sum is σ = 56246400. Its totient is φ = 27765504.

The previous prime is 40516633. The next prime is 40516649. The reversal of 40516645 is 54661504.

It is not a de Polignac number, because 40516645 - 2⁵ = 40516613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40516649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65146 + ... + 65764.

It is an arithmetic number, because the mean of its divisors is an integer number (1757700).

Almost surely, 2^40516645 is an apocalyptic number.

It is an amenable number.

40516645 is a deficient number, since it is larger than the sum of its proper divisors (15729755).

40516645 is a wasteful number, since it uses less digits than its factorization.

40516645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 40516645 is about 6365.2686510469. The cubic root of 40516645 is about 343.4613126645.

The spelling of 40516645 in words is "forty million, five hundred sixteen thousand, six hundred forty-five".