620566426 has 8 divisors (see below), whose sum is σ = 931854420. Its totient is φ = 309948288.

The previous prime is 620566417. The next prime is 620566433. The reversal of 620566426 is 624665026.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 558140625 + 62425801 = 23625^2 + 7901^2 .

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

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, 165141 + ... + 168856.

Almost surely, 2^620566426 is an apocalyptic number.

620566426 is a deficient number, since it is larger than the sum of its proper divisors (311287994).

620566426 is a wasteful number, since it uses less digits than its factorization.

620566426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334928.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 620566426 is about 24911.1707071346. The cubic root of 620566426 is about 852.9614926907.

The spelling of 620566426 in words is "six hundred twenty million, five hundred sixty-six thousand, four hundred twenty-six".