620755042 has 8 divisors (see below), whose sum is σ = 980139600. Its totient is φ = 294041844.

The previous prime is 620755033. The next prime is 620755049. The reversal of 620755042 is 240557026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 620754995 and 620755013.

It is not an unprimeable number, because it can be changed into a prime (620755049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8167792 + ... + 8167867.

It is an arithmetic number, because the mean of its divisors is an integer number (122517450).

Almost surely, 2^620755042 is an apocalyptic number.

620755042 is a deficient number, since it is larger than the sum of its proper divisors (359384558).

620755042 is a wasteful number, since it uses less digits than its factorization.

620755042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16335680.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 620755042 is about 24914.9561910111. The cubic root of 620755042 is about 853.0479007857.

The spelling of 620755042 in words is "six hundred twenty million, seven hundred fifty-five thousand, forty-two".