2420645655 has 16 divisors (see below), whose sum is σ = 3963104640. Its totient is φ = 1260987168.

The previous prime is 2420645639. The next prime is 2420645707. The reversal of 2420645655 is 5565460242.

2420645655 = 2² + 3² + ... + 1936².

It is not a de Polignac number, because 2420645655 - 2⁴ = 2420645639 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1875825 + ... + 1877114.

It is an arithmetic number, because the mean of its divisors is an integer number (247694040).

Almost surely, 2^2420645655 is an apocalyptic number.

2420645655 is a deficient number, since it is larger than the sum of its proper divisors (1542458985).

2420645655 is a wasteful number, since it uses less digits than its factorization.

2420645655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752990.

The product of its (nonzero) digits is 288000, while the sum is 39.

The square root of 2420645655 is about 49200.0574694786. The cubic root of 2420645655 is about 1342.6940777577.

The spelling of 2420645655 in words is "two billion, four hundred twenty million, six hundred forty-five thousand, six hundred fifty-five".