3635994 has 32 divisors (see below), whose sum is σ = 7888320. Its totient is φ = 1112832.

The previous prime is 3635987. The next prime is 3635999. The reversal of 3635994 is 4995363.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3635999) 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, 3972 + ... + 4800.

It is an arithmetic number, because the mean of its divisors is an integer number (246510).

Almost surely, 2^3635994 is an apocalyptic number.

3635994 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3635994 is an abundant number, since it is smaller than the sum of its proper divisors (4252326).

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

3635994 is a wasteful number, since it uses less digits than its factorization.

3635994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894.

The product of its digits is 87480, while the sum is 39.

The square root of 3635994 is about 1906.8282565559. The cubic root of 3635994 is about 153.7709813392.

The spelling of 3635994 in words is "three million, six hundred thirty-five thousand, nine hundred ninety-four".