5651986 has 8 divisors (see below), whose sum is σ = 8604720. Its totient is φ = 2783748.

The previous prime is 5651983. The next prime is 5651999. The reversal of 5651986 is 6891565.

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

It is not an unprimeable number, because it can be changed into a prime (5651981) 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 3 ways as a sum of consecutive naturals, for example, 20956 + ... + 21223.

It is an arithmetic number, because the mean of its divisors is an integer number (1075590).

Almost surely, 2^5651986 is an apocalyptic number.

5651986 is a deficient number, since it is larger than the sum of its proper divisors (2952734).

5651986 is a wasteful number, since it uses less digits than its factorization.

5651986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42248.

The product of its digits is 64800, while the sum is 40.

The square root of 5651986 is about 2377.3905863362. The cubic root of 5651986 is about 178.1286155417.

The spelling of 5651986 in words is "five million, six hundred fifty-one thousand, nine hundred eighty-six".