20775466 has 8 divisors (see below), whose sum is σ = 31186980. Its totient is φ = 10379808.

The previous prime is 20775449. The next prime is 20775511. The reversal of 20775466 is 66457702.

It can be written as a sum of positive squares in 2 ways, for example, as 20061441 + 714025 = 4479^2 + 845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 180 + ... + 6448.

Almost surely, 2^20775466 is an apocalyptic number.

20775466 is a deficient number, since it is larger than the sum of its proper divisors (10411514).

20775466 is a wasteful number, since it uses less digits than its factorization.

20775466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 20775466 is about 4558.0111891043. The cubic root of 20775466 is about 274.9056028624.

The spelling of 20775466 in words is "twenty million, seven hundred seventy-five thousand, four hundred sixty-six".