22487705 has 4 divisors (see below), whose sum is σ = 26985252. Its totient is φ = 17990160.

The previous prime is 22487687. The next prime is 22487737. The reversal of 22487705 is 50778422.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8886361 + 13601344 = 2981^2 + 3688^2 .

It is not a de Polignac number, because 22487705 - 2¹² = 22483609 is a prime.

It is a Duffinian 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, 2248766 + ... + 2248775.

It is an arithmetic number, because the mean of its divisors is an integer number (6746313).

Almost surely, 2^22487705 is an apocalyptic number.

It is an amenable number.

22487705 is a deficient number, since it is larger than the sum of its proper divisors (4497547).

22487705 is an equidigital number, since it uses as much as digits as its factorization.

22487705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497546.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 22487705 is about 4742.1203063609. The cubic root of 22487705 is about 282.2593769040.

The spelling of 22487705 in words is "twenty-two million, four hundred eighty-seven thousand, seven hundred five".