10240661 has 4 divisors (see below), whose sum is σ = 10247232. Its totient is φ = 10234092.

The previous prime is 10240631. The next prime is 10240673. The reversal of 10240661 is 16604201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10240661 - 2⁶ = 10240597 is a prime.

It is a super-2 number, since 2×10240661² = 209742275433842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10240631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530 + ... + 4556.

It is an arithmetic number, because the mean of its divisors is an integer number (2561808).

Almost surely, 2^10240661 is an apocalyptic number.

It is an amenable number.

10240661 is a deficient number, since it is larger than the sum of its proper divisors (6571).

10240661 is an equidigital number, since it uses as much as digits as its factorization.

10240661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 10240661 is about 3200.1032795833. The cubic root of 10240661 is about 217.1580817011.

Adding to 10240661 its reverse (16604201), we get a palindrome (26844862).

It can be divided in two parts, 10240 and 661, that added together give a palindrome (10901).

The spelling of 10240661 in words is "ten million, two hundred forty thousand, six hundred sixty-one".