2220787 has 2 divisors, whose sum is σ = 2220788. Its totient is φ = 2220786.

The previous prime is 2220773. The next prime is 2220839. The reversal of 2220787 is 7870222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220787 is a prime.

It is not a weakly prime, because it can be changed into another prime (2220187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110393 + 1110394.

It is an arithmetic number, because the mean of its divisors is an integer number (1110394).

2^2220787 is an apocalyptic number.

2220787 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220787 is an equidigital number, since it uses as much as digits as its factorization.

2220787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 2220787 is about 1490.2305190809. The cubic root of 2220787 is about 130.4674884635.

The spelling of 2220787 in words is "two million, two hundred twenty thousand, seven hundred eighty-seven".