222621487 has 12 divisors (see below), whose sum is σ = 253141560. Its totient is φ = 195401360.

The previous prime is 222621463. The next prime is 222621517. The reversal of 222621487 is 784126222.

It is not a de Polignac number, because 222621487 - 2¹⁵ = 222588719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222621437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28213 + ... + 35230.

It is an arithmetic number, because the mean of its divisors is an integer number (21095130).

Almost surely, 2^222621487 is an apocalyptic number.

222621487 is a deficient number, since it is larger than the sum of its proper divisors (30520073).

222621487 is a wasteful number, since it uses less digits than its factorization.

222621487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63494 (or 63483 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 222621487 is about 14920.5055879484. The cubic root of 222621487 is about 606.0694033652.

The spelling of 222621487 in words is "two hundred twenty-two million, six hundred twenty-one thousand, four hundred eighty-seven".