1620368606 has 8 divisors (see below), whose sum is σ = 2449107144. Its totient is φ = 803999560.

The previous prime is 1620368597. The next prime is 1620368609. The reversal of 1620368606 is 6068630261.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1620368606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620368609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3092045 + ... + 3092568.

It is an arithmetic number, because the mean of its divisors is an integer number (306138393).

Almost surely, 2^1620368606 is an apocalyptic number.

1620368606 is a deficient number, since it is larger than the sum of its proper divisors (828738538).

1620368606 is a wasteful number, since it uses less digits than its factorization.

1620368606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184746.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1620368606 is about 40253.8023794026. The cubic root of 1620368606 is about 1174.5493623672.

Adding to 1620368606 its reverse (6068630261), we get a palindrome (7688998867).

The spelling of 1620368606 in words is "one billion, six hundred twenty million, three hundred sixty-eight thousand, six hundred six".