6649154 has 4 divisors (see below), whose sum is σ = 9973734. Its totient is φ = 3324576.

The previous prime is 6649151. The next prime is 6649163. The reversal of 6649154 is 4519466.

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., 6375625 + 273529 = 2525^2 + 523^2 .

It is a super-2 number, since 2×6649154² = 88422497831432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6649151) by changing a digit.

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, 1662287 + ... + 1662290.

Almost surely, 2^6649154 is an apocalyptic number.

6649154 is a deficient number, since it is larger than the sum of its proper divisors (3324580).

6649154 is a wasteful number, since it uses less digits than its factorization.

6649154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324579.

The product of its digits is 25920, while the sum is 35.

The square root of 6649154 is about 2578.5953540639. The cubic root of 6649154 is about 188.0422607575.

The spelling of 6649154 in words is "six million, six hundred forty-nine thousand, one hundred fifty-four".