2215629 has 24 divisors (see below), whose sum is σ = 3570840. Its totient is φ = 1314432.

The previous prime is 2215583. The next prime is 2215639. The reversal of 2215629 is 9265122.

2215629 is a `hidden beast` number, since 22 + 15 + 629 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10404 + 2205225 = 102^2 + 1485^2 .

It is not a de Polignac number, because 2215629 - 2⁷ = 2215501 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 2⁸ + 1 + 5⁹ + 6 + 2¹⁸ + 9² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3067 + ... + 3719.

It is an arithmetic number, because the mean of its divisors is an integer number (148785).

2^2215629 is an apocalyptic number.

2215629 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2215629 is a deficient number, since it is larger than the sum of its proper divisors (1355211).

2215629 is a wasteful number, since it uses less digits than its factorization.

2215629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 698 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 2215629 is about 1488.4989082965. The cubic root of 2215629 is about 130.3664022303.

It can be divided in two parts, 22 and 15629, that added together give a palindrome (15651).

The spelling of 2215629 in words is "two million, two hundred fifteen thousand, six hundred twenty-nine".