10649218 has 4 divisors (see below), whose sum is σ = 15973830. Its totient is φ = 5324608.

The previous prime is 10649203. The next prime is 10649227. The reversal of 10649218 is 81294601.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 6335289 + 4313929 = 2517^2 + 2077^2 .

It is a super-2 number, since 2×10649218² = 226811688023048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 10649218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2662303 + ... + 2662306.

Almost surely, 2^10649218 is an apocalyptic number.

10649218 is a deficient number, since it is larger than the sum of its proper divisors (5324612).

10649218 is an equidigital number, since it uses as much as digits as its factorization.

10649218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324611.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 10649218 is about 3263.3139597654. The cubic root of 10649218 is about 220.0083881099.

The spelling of 10649218 in words is "ten million, six hundred forty-nine thousand, two hundred eighteen".