2216477 has 8 divisors (see below), whose sum is σ = 2360952. Its totient is φ = 2073600.

The previous prime is 2216471. The next prime is 2216479. The reversal of 2216477 is 7746122.

It can be written as a sum of positive squares in 4 ways, for example, as 749956 + 1466521 = 866^2 + 1211^2 .

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 2216477 - 2⁶ = 2216413 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 2²¹ + 1 + 6⁴ + 4 + 7³ + 7⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216471) 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, 3827 + ... + 4367.

It is an arithmetic number, because the mean of its divisors is an integer number (295119).

2^2216477 is an apocalyptic number.

It is an amenable number.

2216477 is a deficient number, since it is larger than the sum of its proper divisors (144475).

2216477 is a wasteful number, since it uses less digits than its factorization.

2216477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its digits is 4704, while the sum is 29.

The square root of 2216477 is about 1488.7837317757. The cubic root of 2216477 is about 130.3830320615.

It can be divided in two parts, 22164 and 77, that multiplied together give a triangular number (1706628 = T₁₈₄₇).

The spelling of 2216477 in words is "two million, two hundred sixteen thousand, four hundred seventy-seven".