1623615055 has 8 divisors (see below), whose sum is σ = 1957076352. Its totient is φ = 1293066528.

The previous prime is 1623615053. The next prime is 1623615067. The reversal of 1623615055 is 5505163261.

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 1623615055 - 2¹ = 1623615053 is a prime.

It is a super-2 number, since 2×1623615055² = 5272251693645306050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1623615055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623615053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726964 + ... + 729193.

It is an arithmetic number, because the mean of its divisors is an integer number (244634544).

Almost surely, 2^1623615055 is an apocalyptic number.

1623615055 is a deficient number, since it is larger than the sum of its proper divisors (333461297).

1623615055 is a wasteful number, since it uses less digits than its factorization.

1623615055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456385.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 1623615055 is about 40294.1069512652. The cubic root of 1623615055 is about 1175.3332520869. Note that the first 3 decimals are identical.

The spelling of 1623615055 in words is "one billion, six hundred twenty-three million, six hundred fifteen thousand, fifty-five".