6221015 has 4 divisors (see below), whose sum is σ = 7465224. Its totient is φ = 4976808.

The previous prime is 6221009. The next prime is 6221023. The reversal of 6221015 is 5101226.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6221015 - 2¹⁰ = 6219991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6220984 and 6221002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622097 + ... + 622106.

It is an arithmetic number, because the mean of its divisors is an integer number (1866306).

Almost surely, 2^6221015 is an apocalyptic number.

6221015 is a deficient number, since it is larger than the sum of its proper divisors (1244209).

6221015 is a wasteful number, since it uses less digits than its factorization.

6221015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244208.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 6221015 is about 2494.1962633281. The cubic root of 6221015 is about 183.9163825326.

The spelling of 6221015 in words is "six million, two hundred twenty-one thousand, fifteen".