620464026 has 64 divisors (see below), whose sum is σ = 1568625408. Its totient is φ = 159211008.

The previous prime is 620463979. The next prime is 620464037.

620464026 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 620463984 and 620464002.

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 31 ways as a sum of consecutive naturals, for example, 4846 + ... + 35558.

It is an arithmetic number, because the mean of its divisors is an integer number (24509772).

Almost surely, 2^620464026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620464026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784312704).

620464026 is an abundant number, since it is smaller than the sum of its proper divisors (948161382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620464026 is a wasteful number, since it uses less digits than its factorization.

620464026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30775.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 620464026 is about 24909.1153194970. The cubic root of 620464026 is about 852.9145742316.

The spelling of 620464026 in words is "six hundred twenty million, four hundred sixty-four thousand, twenty-six".