6649170 has 32 divisors (see below), whose sum is σ = 17409600. Its totient is φ = 1611840.

The previous prime is 6649163. The next prime is 6649189. The reversal of 6649170 is 719466.

It is a happy number.

It is a super-2 number, since 2×6649170² = 88422923377800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9745 + ... + 10404.

It is an arithmetic number, because the mean of its divisors is an integer number (544050).

Almost surely, 2^6649170 is an apocalyptic number.

6649170 is an abundant number, since it is smaller than the sum of its proper divisors (10760430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6649170 is a wasteful number, since it uses less digits than its factorization.

6649170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20170.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 6649170 is about 2578.5984565263. The cubic root of 6649170 is about 188.0424115874.

The spelling of 6649170 in words is "six million, six hundred forty-nine thousand, one hundred seventy".