620635026 has 32 divisors (see below), whose sum is σ = 1357233408. Its totient is φ = 187637840.

The previous prime is 620634979. The next prime is 620635033. The reversal of 620635026 is 620536026.

620635026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 620634984 and 620635002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18625 + ... + 39851.

It is an arithmetic number, because the mean of its divisors is an integer number (42413544).

Almost surely, 2^620635026 is an apocalyptic number.

620635026 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

620635026 is an abundant number, since it is smaller than the sum of its proper divisors (736598382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620635026 is a wasteful number, since it uses less digits than its factorization.

620635026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21686.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 620635026 is about 24912.5475614197. The cubic root of 620635026 is about 852.9929215058.

The spelling of 620635026 in words is "six hundred twenty million, six hundred thirty-five thousand, twenty-six".