6377640 has 32 divisors (see below), whose sum is σ = 19133280. Its totient is φ = 1700672.

The previous prime is 6377639. The next prime is 6377641. The reversal of 6377640 is 467736.

It is an interprime number because it is at equal distance from previous prime (6377639) and next prime (6377641).

It is not an unprimeable number, because it can be changed into a prime (6377641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26454 + ... + 26693.

It is an arithmetic number, because the mean of its divisors is an integer number (597915).

Almost surely, 2^6377640 is an apocalyptic number.

6377640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6377640 is an abundant number, since it is smaller than the sum of its proper divisors (12755640).

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

6377640 is a wasteful number, since it uses less digits than its factorization.

6377640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53161 (or 53157 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 6377640 is about 2525.3989783795. The cubic root of 6377640 is about 185.4470803678.

The spelling of 6377640 in words is "six million, three hundred seventy-seven thousand, six hundred forty".