40641164 has 12 divisors (see below), whose sum is σ = 71307600. Its totient is φ = 20267568.

The previous prime is 40641137. The next prime is 40641179. The reversal of 40641164 is 46114604.

It is a super-2 number, since 2×40641164² = 3303408422549792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11504 + ... + 14615.

It is an arithmetic number, because the mean of its divisors is an integer number (5942300).

Almost surely, 2^40641164 is an apocalyptic number.

It is an amenable number.

40641164 is a deficient number, since it is larger than the sum of its proper divisors (30666436).

40641164 is a wasteful number, since it uses less digits than its factorization.

40641164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26512 (or 26510 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40641164 is about 6375.0422743696. The cubic root of 40641164 is about 343.8128037756.

Adding to 40641164 its reverse (46114604), we get a palindrome (86755768).

The spelling of 40641164 in words is "forty million, six hundred forty-one thousand, one hundred sixty-four".