620388748 has 48 divisors (see below), whose sum is σ = 1263737664. Its totient is φ = 260997120.

The previous prime is 620388739. The next prime is 620388749. The reversal of 620388748 is 847883026.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 620388698 and 620388707.

It is not an unprimeable number, because it can be changed into a prime (620388749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524718 + ... + 525898.

It is an arithmetic number, because the mean of its divisors is an integer number (26327868).

Almost surely, 2^620388748 is an apocalyptic number.

It is an amenable number.

620388748 is an abundant number, since it is smaller than the sum of its proper divisors (643348916).

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

620388748 is a wasteful number, since it uses less digits than its factorization.

620388748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1520 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 620388748 is about 24907.6042203982. The cubic root of 620388748 is about 852.8800794570.

The spelling of 620388748 in words is "six hundred twenty million, three hundred eighty-eight thousand, seven hundred forty-eight".