620891460 has 192 divisors, whose sum is σ = 2235340800. Its totient is φ = 140137344.

The previous prime is 620891441. The next prime is 620891461. The reversal of 620891460 is 64198026.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (620891461) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 312751 + ... + 314729.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^620891460 is an apocalyptic number.

620891460 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 620891460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1117670400).

620891460 is an abundant number, since it is smaller than the sum of its proper divisors (1614449340).

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

620891460 is a wasteful number, since it uses less digits than its factorization.

620891460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087 (or 2079 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 620891460 is about 24917.6937135041. The cubic root of 620891460 is about 853.1103852103.

The spelling of 620891460 in words is "six hundred twenty million, eight hundred ninety-one thousand, four hundred sixty".