6651914 has 4 divisors (see below), whose sum is σ = 9977874. Its totient is φ = 3325956.

The previous prime is 6651907. The next prime is 6651923. The reversal of 6651914 is 4191566.

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., 4644025 + 2007889 = 2155^2 + 1417^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1662977 + ... + 1662980.

Almost surely, 2^6651914 is an apocalyptic number.

6651914 is a deficient number, since it is larger than the sum of its proper divisors (3325960).

6651914 is a wasteful number, since it uses less digits than its factorization.

6651914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325959.

The product of its digits is 6480, while the sum is 32.

The square root of 6651914 is about 2579.1304736287. The cubic root of 6651914 is about 188.0682753375.

It can be divided in two parts, 665 and 1914, that multiplied together give a triangular number (1272810 = T₁₅₉₅).

The spelling of 6651914 in words is "six million, six hundred fifty-one thousand, nine hundred fourteen".