620520434 has 8 divisors (see below), whose sum is σ = 985532508. Its totient is φ = 292009600.

The previous prime is 620520419. The next prime is 620520437. The reversal of 620520434 is 434025026.

It can be written as a sum of positive squares in 2 ways, for example, as 574321225 + 46199209 = 23965^2 + 6797^2 .

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

It is not an unprimeable number, because it can be changed into a prime (620520437) by changing a digit.

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, 9125267 + ... + 9125334.

Almost surely, 2^620520434 is an apocalyptic number.

620520434 is a deficient number, since it is larger than the sum of its proper divisors (365012074).

620520434 is a wasteful number, since it uses less digits than its factorization.

620520434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18250620.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 620520434 is about 24910.2475700263. The cubic root of 620520434 is about 852.9404203432.

The spelling of 620520434 in words is "six hundred twenty million, five hundred twenty thousand, four hundred thirty-four".