626604420 has 96 divisors (see below), whose sum is σ = 1988945280. Its totient is φ = 146119680.

The previous prime is 626604409. The next prime is 626604431. The reversal of 626604420 is 24406626.

It is an interprime number because it is at equal distance from previous prime (626604409) and next prime (626604431).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6321 + ... + 35960.

It is an arithmetic number, because the mean of its divisors is an integer number (20718180).

Almost surely, 2^626604420 is an apocalyptic number.

626604420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 626604420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994472640).

626604420 is an abundant number, since it is smaller than the sum of its proper divisors (1362340860).

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

626604420 is a wasteful number, since it uses less digits than its factorization.

626604420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42325 (or 42323 counting only the distinct ones).

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

The square root of 626604420 is about 25032.0678330816. The cubic root of 626604420 is about 855.7189534308.

The spelling of 626604420 in words is "six hundred twenty-six million, six hundred four thousand, four hundred twenty".