3551634 has 32 divisors (see below), whose sum is σ = 7992000. Its totient is φ = 1168992.

The previous prime is 3551629. The next prime is 3551641. The reversal of 3551634 is 4361553.

It is a super-2 number, since 2×3551634² = 25228208139912, which contains 22 as substring.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3551598 and 3551607.

It is a congruent 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, 4437 + ... + 5175.

It is an arithmetic number, because the mean of its divisors is an integer number (249750).

Almost surely, 2^3551634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3551634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3996000).

3551634 is an abundant number, since it is smaller than the sum of its proper divisors (4440366).

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

3551634 is a wasteful number, since it uses less digits than its factorization.

3551634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 833 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 3551634 is about 1884.5779368336. The cubic root of 3551634 is about 152.5724317751.

The spelling of 3551634 in words is "three million, five hundred fifty-one thousand, six hundred thirty-four".