10649659 has 4 divisors (see below), whose sum is σ = 10690416. Its totient is φ = 10608904.

The previous prime is 10649629. The next prime is 10649663. The reversal of 10649659 is 95694601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10649659 is a prime.

It is a super-2 number, since 2×10649659² = 226830473632562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10649609) 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, 19984 + ... + 20509.

It is an arithmetic number, because the mean of its divisors is an integer number (2672604).

Almost surely, 2^10649659 is an apocalyptic number.

10649659 is a deficient number, since it is larger than the sum of its proper divisors (40757).

10649659 is an equidigital number, since it uses as much as digits as its factorization.

10649659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40756.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 10649659 is about 3263.3815284150. The cubic root of 10649659 is about 220.0114250265.

The spelling of 10649659 in words is "ten million, six hundred forty-nine thousand, six hundred fifty-nine".