6649995 has 32 divisors (see below), whose sum is σ = 11902464. Its totient is φ = 3142400.

The previous prime is 6649919. The next prime is 6649999. The reversal of 6649995 is 5999466.

It is a happy number.

It is not a de Polignac number, because 6649995 - 2⁹ = 6649483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6649999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6274 + ... + 7256.

It is an arithmetic number, because the mean of its divisors is an integer number (371952).

Almost surely, 2^6649995 is an apocalyptic number.

6649995 is a deficient number, since it is larger than the sum of its proper divisors (5252469).

6649995 is a wasteful number, since it uses less digits than its factorization.

6649995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043.

The product of its digits is 524880, while the sum is 48.

The square root of 6649995 is about 2578.7584221869. The cubic root of 6649995 is about 188.0501884264.

The spelling of 6649995 in words is "six million, six hundred forty-nine thousand, nine hundred ninety-five".