620356234 has 4 divisors (see below), whose sum is σ = 930534354. Its totient is φ = 310178116.

The previous prime is 620356211. The next prime is 620356237. The reversal of 620356234 is 432653026.

It is a happy number.

620356234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 612711009 + 7645225 = 24753^2 + 2765^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 620356196 and 620356205.

It is not an unprimeable number, because it can be changed into a prime (620356237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155089057 + ... + 155089060.

Almost surely, 2^620356234 is an apocalyptic number.

620356234 is a deficient number, since it is larger than the sum of its proper divisors (310178120).

620356234 is a wasteful number, since it uses less digits than its factorization.

620356234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310178119.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 620356234 is about 24906.9515196059. The cubic root of 620356234 is about 852.8651796449.

The spelling of 620356234 in words is "six hundred twenty million, three hundred fifty-six thousand, two hundred thirty-four".