5672821 has 8 divisors (see below), whose sum is σ = 7072704. Its totient is φ = 4420320.

The previous prime is 5672813. The next prime is 5672827. The reversal of 5672821 is 1282765.

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

It is a cyclic number.

It is not a de Polignac number, because 5672821 - 2³ = 5672813 is a prime.

It is a Duffinian number.

5672821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5672827) 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, 36760 + ... + 36913.

It is an arithmetic number, because the mean of its divisors is an integer number (884088).

Almost surely, 2^5672821 is an apocalyptic number.

It is an amenable number.

5672821 is a deficient number, since it is larger than the sum of its proper divisors (1399883).

5672821 is a wasteful number, since it uses less digits than its factorization.

5672821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73691.

The product of its digits is 6720, while the sum is 31.

The square root of 5672821 is about 2381.7684606191. The cubic root of 5672821 is about 178.3472265260.

The spelling of 5672821 in words is "five million, six hundred seventy-two thousand, eight hundred twenty-one".