3555994 has 8 divisors (see below), whose sum is σ = 5744340. Its totient is φ = 1641216.

The previous prime is 3555977. The next prime is 3556001. The reversal of 3555994 is 4995553.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2480625 + 1075369 = 1575^2 + 1037^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68359 + ... + 68410.

Almost surely, 2^3555994 is an apocalyptic number.

3555994 is a deficient number, since it is larger than the sum of its proper divisors (2188346).

3555994 is a wasteful number, since it uses less digits than its factorization.

3555994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136784.

The product of its digits is 121500, while the sum is 40.

The square root of 3555994 is about 1885.7343397202. The cubic root of 3555994 is about 152.6348390859.

It can be divided in two parts, 35559 and 94, that added together give a palindrome (35653).

The spelling of 3555994 in words is "three million, five hundred fifty-five thousand, nine hundred ninety-four".