10897661 has 4 divisors (see below), whose sum is σ = 10920000. Its totient is φ = 10875324.

The previous prime is 10897657. The next prime is 10897673. The reversal of 10897661 is 16679801.

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.

It is a cyclic number.

It is not a de Polignac number, because 10897661 - 2² = 10897657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10897681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10421 + ... + 11418.

It is an arithmetic number, because the mean of its divisors is an integer number (2730000).

Almost surely, 2^10897661 is an apocalyptic number.

It is an amenable number.

10897661 is a deficient number, since it is larger than the sum of its proper divisors (22339).

10897661 is an equidigital number, since it uses as much as digits as its factorization.

10897661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22338.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 10897661 is about 3301.1605535024. The cubic root of 10897661 is about 221.7061623960.

The spelling of 10897661 in words is "ten million, eight hundred ninety-seven thousand, six hundred sixty-one".