22065994 has 4 divisors (see below), whose sum is σ = 33098994. Its totient is φ = 11032996.

The previous prime is 22065991. The next prime is 22065997. The reversal of 22065994 is 49956022.

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

It is an interprime number because it is at equal distance from previous prime (22065991) and next prime (22065997).

It can be written as a sum of positive squares in only one way, i.e., 20657025 + 1408969 = 4545^2 + 1187^2 .

It is a super-3 number, since 3×22065994³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22065991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5516497 + ... + 5516500.

Almost surely, 2^22065994 is an apocalyptic number.

22065994 is a deficient number, since it is larger than the sum of its proper divisors (11033000).

22065994 is a wasteful number, since it uses less digits than its factorization.

22065994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11032999.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 22065994 is about 4697.4454760008. The cubic root of 22065994 is about 280.4838318385.

The spelling of 22065994 in words is "twenty-two million, sixty-five thousand, nine hundred ninety-four".