620164615 has 16 divisors (see below), whose sum is σ = 861281280. Its totient is φ = 419870880.

The previous prime is 620164603. The next prime is 620164631. The reversal of 620164615 is 516461026.

It is not a de Polignac number, because 620164615 - 2⁷ = 620164487 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 15 ways as a sum of consecutive naturals, for example, 109381 + ... + 114910.

It is an arithmetic number, because the mean of its divisors is an integer number (53830080).

Almost surely, 2^620164615 is an apocalyptic number.

620164615 is a deficient number, since it is larger than the sum of its proper divisors (241116665).

620164615 is a wasteful number, since it uses less digits than its factorization.

620164615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224382.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 620164615 is about 24903.1045253398. The cubic root of 620164615 is about 852.7773580604. Note that the first 3 decimals are identical.

The spelling of 620164615 in words is "six hundred twenty million, one hundred sixty-four thousand, six hundred fifteen".