20066582 has 4 divisors (see below), whose sum is σ = 30099876. Its totient is φ = 10033290.

The previous prime is 20066581. The next prime is 20066587. The reversal of 20066582 is 28566002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28566002 = 2 ⋅14283001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5016644 + ... + 5016647.

It is an arithmetic number, because the mean of its divisors is an integer number (7524969).

Almost surely, 2^20066582 is an apocalyptic number.

20066582 is a deficient number, since it is larger than the sum of its proper divisors (10033294).

20066582 is a wasteful number, since it uses less digits than its factorization.

20066582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10033293.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 20066582 is about 4479.5738636616. The cubic root of 20066582 is about 271.7426469366.

The spelling of 20066582 in words is "twenty million, sixty-six thousand, five hundred eighty-two".