620715650 has 24 divisors (see below), whose sum is σ = 1155850500. Its totient is φ = 248002560.

The previous prime is 620715649. The next prime is 620715659. The reversal of 620715650 is 56517026.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 35414401 + 585301249 = 5951^2 + 24193^2 .

It is not an unprimeable number, because it can be changed into a prime (620715659) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 40226 + ... + 53474.

Almost surely, 2^620715650 is an apocalyptic number.

620715650 is a deficient number, since it is larger than the sum of its proper divisors (535134850).

620715650 is a wasteful number, since it uses less digits than its factorization.

620715650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14198 (or 14193 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 620715650 is about 24914.1656492847. The cubic root of 620715650 is about 853.0298561081.

The spelling of 620715650 in words is "six hundred twenty million, seven hundred fifteen thousand, six hundred fifty".