620040045 has 16 divisors (see below), whose sum is σ = 992639232. Its totient is φ = 330496320.

The previous prime is 620040013. The next prime is 620040067. The reversal of 620040045 is 540040026.

It is a happy number.

It is not a de Polignac number, because 620040045 - 2⁵ = 620040013 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17019 + ... + 39111.

It is an arithmetic number, because the mean of its divisors is an integer number (62039952).

Almost surely, 2^620040045 is an apocalyptic number.

It is an amenable number.

620040045 is a deficient number, since it is larger than the sum of its proper divisors (372599187).

620040045 is a wasteful number, since it uses less digits than its factorization.

620040045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23972.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 620040045 is about 24900.6033059442. The cubic root of 620040045 is about 852.7202562380.

The spelling of 620040045 in words is "six hundred twenty million, forty thousand, forty-five".