6635601 has 48 divisors (see below), whose sum is σ = 11741184. Its totient is φ = 3666384.

The previous prime is 6635597. The next prime is 6635609. The reversal of 6635601 is 1065366.

It is not a de Polignac number, because 6635601 - 2² = 6635597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

6635601 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6635609) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79906 + ... + 79988.

It is an arithmetic number, because the mean of its divisors is an integer number (244608).

Almost surely, 2^6635601 is an apocalyptic number.

It is an amenable number.

6635601 is a deficient number, since it is larger than the sum of its proper divisors (5105583).

6635601 is an equidigital number, since it uses as much as digits as its factorization.

6635601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 6635601 is about 2575.9660323847. The cubic root of 6635601 is about 187.9144113956.

The spelling of 6635601 in words is "six million, six hundred thirty-five thousand, six hundred one".