40645345 has 24 divisors (see below), whose sum is σ = 53441856. Its totient is φ = 29659968.

The previous prime is 40645343. The next prime is 40645357. The reversal of 40645345 is 54354604.

It is not a de Polignac number, because 40645345 - 2¹ = 40645343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40645343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86802 + ... + 87268.

It is an arithmetic number, because the mean of its divisors is an integer number (2226744).

Almost surely, 2^40645345 is an apocalyptic number.

It is an amenable number.

40645345 is a deficient number, since it is larger than the sum of its proper divisors (12796511).

40645345 is a wasteful number, since it uses less digits than its factorization.

40645345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 40645345 is about 6375.3701853304. The cubic root of 40645345 is about 343.8245933989.

Adding to 40645345 its reverse (54354604), we get a palindrome (94999949).

It can be divided in two parts, 4064 and 5345, that added together give a square (9409 = 97²).

The spelling of 40645345 in words is "forty million, six hundred forty-five thousand, three hundred forty-five".