620468615 has 32 divisors (see below), whose sum is σ = 820834560. Its totient is φ = 447422976.

The previous prime is 620468609. The next prime is 620468623. The reversal of 620468615 is 516864026.

It is not a de Polignac number, because 620468615 - 2⁴ = 620468599 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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1339874 + ... + 1340336.

It is an arithmetic number, because the mean of its divisors is an integer number (25651080).

Almost surely, 2^620468615 is an apocalyptic number.

620468615 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

620468615 is a deficient number, since it is larger than the sum of its proper divisors (200365945).

620468615 is a wasteful number, since it uses less digits than its factorization.

620468615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 620468615 is about 24909.2074341999. The cubic root of 620468615 is about 852.9166769671.

The spelling of 620468615 in words is "six hundred twenty million, four hundred sixty-eight thousand, six hundred fifteen".