5661995 has 8 divisors (see below), whose sum is σ = 7013760. Its totient is φ = 4383360.

The previous prime is 5661991. The next prime is 5662039. The reversal of 5661995 is 5991665.

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

It is not a de Polignac number, because 5661995 - 2² = 5661991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5661991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18110 + ... + 18419.

It is an arithmetic number, because the mean of its divisors is an integer number (876720).

Almost surely, 2^5661995 is an apocalyptic number.

5661995 is a deficient number, since it is larger than the sum of its proper divisors (1351765).

5661995 is a wasteful number, since it uses less digits than its factorization.

5661995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36565.

The product of its digits is 72900, while the sum is 41.

The square root of 5661995 is about 2379.4946942576. The cubic root of 5661995 is about 178.2337017844.

The spelling of 5661995 in words is "five million, six hundred sixty-one thousand, nine hundred ninety-five".