1620605055 has 8 divisors (see below), whose sum is σ = 2592968112. Its totient is φ = 864322688.

The previous prime is 1620605023. The next prime is 1620605081. The reversal of 1620605055 is 5505060261.

1620605055 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1620605055 - 2⁵ = 1620605023 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54020154 + ... + 54020183.

It is an arithmetic number, because the mean of its divisors is an integer number (324121014).

Almost surely, 2^1620605055 is an apocalyptic number.

1620605055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1620605055 is a deficient number, since it is larger than the sum of its proper divisors (972363057).

1620605055 is a wasteful number, since it uses less digits than its factorization.

1620605055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108040345.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1620605055 is about 40256.7392494723. The cubic root of 1620605055 is about 1174.6064908324.

The spelling of 1620605055 in words is "one billion, six hundred twenty million, six hundred five thousand, fifty-five".