620424460 has 12 divisors (see below), whose sum is σ = 1302891408. Its totient is φ = 248169776.

The previous prime is 620424457. The next prime is 620424479. The reversal of 620424460 is 64424026.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15510592 + ... + 15510631.

It is an arithmetic number, because the mean of its divisors is an integer number (108574284).

Almost surely, 2^620424460 is an apocalyptic number.

It is an amenable number.

620424460 is an abundant number, since it is smaller than the sum of its proper divisors (682466948).

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

620424460 is a wasteful number, since it uses less digits than its factorization.

620424460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31021232 (or 31021230 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 620424460 is about 24908.3210995844. The cubic root of 620424460 is about 852.8964441794.

Adding to 620424460 its reverse (64424026), we get a palindrome (684848486).

The spelling of 620424460 in words is "six hundred twenty million, four hundred twenty-four thousand, four hundred sixty".