620571742 has 8 divisors (see below), whose sum is σ = 1063837296. Its totient is φ = 265959312.

The previous prime is 620571701. The next prime is 620571761. The reversal of 620571742 is 247175026.

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 = 620571698 and 620571707.

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 3 ways as a sum of consecutive naturals, for example, 22163263 + ... + 22163290.

It is an arithmetic number, because the mean of its divisors is an integer number (132979662).

Almost surely, 2^620571742 is an apocalyptic number.

620571742 is a deficient number, since it is larger than the sum of its proper divisors (443265554).

620571742 is a wasteful number, since it uses less digits than its factorization.

620571742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44326562.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 620571742 is about 24911.2774060264. The cubic root of 620571742 is about 852.9639282776.

The spelling of 620571742 in words is "six hundred twenty million, five hundred seventy-one thousand, seven hundred forty-two".