2179641 has 16 divisors (see below), whose sum is σ = 3133440. Its totient is φ = 1343760.

The previous prime is 2179609. The next prime is 2179643. The reversal of 2179641 is 1469712.

It is a happy number.

It is not a de Polignac number, because 2179641 - 2⁵ = 2179609 is a prime.

2179641 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2179599 and 2179608.

It is not an unprimeable number, because it can be changed into a prime (2179643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1630 + ... + 2648.

It is an arithmetic number, because the mean of its divisors is an integer number (195840).

2^2179641 is an apocalyptic number.

It is an amenable number.

2179641 is a deficient number, since it is larger than the sum of its proper divisors (953799).

2179641 is a wasteful number, since it uses less digits than its factorization.

2179641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its digits is 3024, while the sum is 30.

The square root of 2179641 is about 1476.3607282775. The cubic root of 2179641 is about 129.6567076747.

The spelling of 2179641 in words is "two million, one hundred seventy-nine thousand, six hundred forty-one".