24640641 has 6 divisors (see below), whose sum is σ = 35592050. Its totient is φ = 16427088.

The previous prime is 24640607. The next prime is 24640687. The reversal of 24640641 is 14604642.

It can be written as a sum of positive squares in only one way, i.e., 21818241 + 2822400 = 4671^2 + 1680^2 .

It is not a de Polignac number, because 24640641 - 2⁷ = 24640513 is a prime.

It is a super-2 number, since 2×24640641² = 1214322377781762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24640241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1368916 + ... + 1368933.

Almost surely, 2^24640641 is an apocalyptic number.

It is an amenable number.

24640641 is a deficient number, since it is larger than the sum of its proper divisors (10951409).

24640641 is a wasteful number, since it uses less digits than its factorization.

24640641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737855 (or 2737852 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 24640641 is about 4963.9340245414. The cubic root of 24640641 is about 290.9939772729.

It can be divided in two parts, 24640 and 641, that added together give a square (25281 = 159²).

The spelling of 24640641 in words is "twenty-four million, six hundred forty thousand, six hundred forty-one".