19772006 has 8 divisors (see below), whose sum is σ = 29677104. Its totient is φ = 9879640.

The previous prime is 19771987. The next prime is 19772029. The reversal of 19772006 is 60027791.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3551 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (3709638).

Almost surely, 2^19772006 is an apocalyptic number.

19772006 is a deficient number, since it is larger than the sum of its proper divisors (9905098).

19772006 is a wasteful number, since it uses less digits than its factorization.

19772006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 19772006 is about 4446.5723878061. The cubic root of 19772006 is about 270.4063656841.

Adding to 19772006 its reverse (60027791), we get a palindrome (79799797).

The spelling of 19772006 in words is "nineteen million, seven hundred seventy-two thousand, six".