40707645 has 16 divisors (see below), whose sum is σ = 71053632. Its totient is φ = 19736960.

The previous prime is 40707617. The next prime is 40707661. The reversal of 40707645 is 54670704.

It is not a de Polignac number, because 40707645 - 2⁵ = 40707613 is a prime.

It is a super-2 number, since 2×40707645² = 3314224722892050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 15 ways as a sum of consecutive naturals, for example, 123192 + ... + 123521.

It is an arithmetic number, because the mean of its divisors is an integer number (4440852).

Almost surely, 2^40707645 is an apocalyptic number.

It is an amenable number.

40707645 is a deficient number, since it is larger than the sum of its proper divisors (30345987).

40707645 is a wasteful number, since it uses less digits than its factorization.

40707645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246732.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 40707645 is about 6380.2543052766. The cubic root of 40707645 is about 344.0001718270. Note that the first 3 decimals are identical.

The spelling of 40707645 in words is "forty million, seven hundred seven thousand, six hundred forty-five".