620345105 has 16 divisors (see below), whose sum is σ = 756169344. Its totient is φ = 488463360.

The previous prime is 620345093. The next prime is 620345149. The reversal of 620345105 is 501543026.

It is not a de Polignac number, because 620345105 - 2¹⁴ = 620328721 is a prime.

It is a super-2 number, since 2×620345105² = 769656098594922050, which contains 22 as substring.

It is a Duffinian number.

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, 292529 + ... + 294641.

It is an arithmetic number, because the mean of its divisors is an integer number (47260584).

Almost surely, 2^620345105 is an apocalyptic number.

It is an amenable number.

620345105 is a deficient number, since it is larger than the sum of its proper divisors (135824239).

620345105 is a wasteful number, since it uses less digits than its factorization.

620345105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 620345105 is about 24906.7281070798. The cubic root of 620345105 is about 852.8600795681.

The spelling of 620345105 in words is "six hundred twenty million, three hundred forty-five thousand, one hundred five".