6377665 has 16 divisors (see below), whose sum is σ = 8934912. Its totient is φ = 4279104.

The previous prime is 6377641. The next prime is 6377689. The reversal of 6377665 is 5667736.

It is an interprime number because it is at equal distance from previous prime (6377641) and next prime (6377689).

It is a cyclic number.

It is not a de Polignac number, because 6377665 - 2⁵ = 6377633 is a prime.

It is a super-2 number, since 2×6377665² = 81349221704450, which contains 22 as substring.

6377665 is a lucky number.

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, 294 + ... + 3583.

It is an arithmetic number, because the mean of its divisors is an integer number (558432).

Almost surely, 2^6377665 is an apocalyptic number.

It is an amenable number.

6377665 is a deficient number, since it is larger than the sum of its proper divisors (2557247).

6377665 is a wasteful number, since it uses less digits than its factorization.

6377665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936.

The product of its digits is 158760, while the sum is 40.

The square root of 6377665 is about 2525.4039280875. The cubic root of 6377665 is about 185.4473226816.

The spelling of 6377665 in words is "six million, three hundred seventy-seven thousand, six hundred sixty-five".