5661634 has 32 divisors (see below), whose sum is σ = 9870336. Its totient is φ = 2410320.

The previous prime is 5661631. The next prime is 5661637. The reversal of 5661634 is 4361665.

It is an interprime number because it is at equal distance from previous prime (5661631) and next prime (5661637).

Its product of digits (12960) is a multiple of the sum of its prime divisors (270).

It is a junction number, because it is equal to n+sod(n) for n = 5661596 and 5661605.

It is not an unprimeable number, because it can be changed into a prime (5661631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33819 + ... + 33985.

It is an arithmetic number, because the mean of its divisors is an integer number (308448).

Almost surely, 2^5661634 is an apocalyptic number.

5661634 is a deficient number, since it is larger than the sum of its proper divisors (4208702).

5661634 is a wasteful number, since it uses less digits than its factorization.

5661634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270.

The product of its digits is 12960, while the sum is 31.

The square root of 5661634 is about 2379.4188366070. The cubic root of 5661634 is about 178.2299137360.

Adding to 5661634 its sum of digits (31), we get a palindrome (5661665).

The spelling of 5661634 in words is "five million, six hundred sixty-one thousand, six hundred thirty-four".