620861536 has 12 divisors (see below), whose sum is σ = 1222321212. Its totient is φ = 310430752.

The previous prime is 620861519. The next prime is 620861617. The reversal of 620861536 is 635168026.

It is a junction number, because it is equal to n+sod(n) for n = 620861495 and 620861504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9700930 + ... + 9700993.

It is an arithmetic number, because the mean of its divisors is an integer number (101860101).

Almost surely, 2^620861536 is an apocalyptic number.

It is an amenable number.

620861536 is a deficient number, since it is larger than the sum of its proper divisors (601459676).

620861536 is a wasteful number, since it uses less digits than its factorization.

620861536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19401933 (or 19401925 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 620861536 is about 24917.0932494141. The cubic root of 620861536 is about 853.0966797095.

The spelling of 620861536 in words is "six hundred twenty million, eight hundred sixty-one thousand, five hundred thirty-six".