6677645 has 16 divisors (see below), whose sum is σ = 9085440. Its totient is φ = 4670784.

The previous prime is 6677641. The next prime is 6677663. The reversal of 6677645 is 5467766.

It is a cyclic number.

It is not a de Polignac number, because 6677645 - 2² = 6677641 is a prime.

It is a super-3 number, since 3×6677645³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6677641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1469 + ... + 3938.

It is an arithmetic number, because the mean of its divisors is an integer number (567840).

Almost surely, 2^6677645 is an apocalyptic number.

6677645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6677645 is a deficient number, since it is larger than the sum of its proper divisors (2407795).

6677645 is a wasteful number, since it uses less digits than its factorization.

6677645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5444.

The product of its digits is 211680, while the sum is 41.

The square root of 6677645 is about 2584.1139680749. The cubic root of 6677645 is about 188.3104591914.

The spelling of 6677645 in words is "six million, six hundred seventy-seven thousand, six hundred forty-five".