620254642 has 24 divisors (see below), whose sum is σ = 1108685340. Its totient is φ = 259338240.

The previous prime is 620254633. The next prime is 620254681. The reversal of 620254642 is 246452026.

620254642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 531348601 + 88906041 = 23051^2 + 9429^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73167 + ... + 81202.

Almost surely, 2^620254642 is an apocalyptic number.

620254642 is a deficient number, since it is larger than the sum of its proper divisors (488430698).

620254642 is a wasteful number, since it uses less digits than its factorization.

620254642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154426 (or 154419 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 620254642 is about 24904.9120054659. The cubic root of 620254642 is about 852.8186209072.

The spelling of 620254642 in words is "six hundred twenty million, two hundred fifty-four thousand, six hundred forty-two".