620360388 has 18 divisors (see below), whose sum is σ = 1568133294. Its totient is φ = 206786784.

The previous prime is 620360387. The next prime is 620360453. The reversal of 620360388 is 883063026.

It can be written as a sum of positive squares in only one way, i.e., 614940804 + 5419584 = 24798^2 + 2328^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 17232233 = 620360388 / (6 + 2 + 0 + 3 + 6 + 0 + 3 + 8 + 8).

It is not an unprimeable number, because it can be changed into a prime (620360383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8616081 + ... + 8616152.

Almost surely, 2^620360388 is an apocalyptic number.

It is an amenable number.

620360388 is an abundant number, since it is smaller than the sum of its proper divisors (947772906).

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

620360388 is a wasteful number, since it uses less digits than its factorization.

620360388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17232243 (or 17232238 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 620360388 is about 24907.0349098402. The cubic root of 620360388 is about 852.8670832791.

The spelling of 620360388 in words is "six hundred twenty million, three hundred sixty thousand, three hundred eighty-eight".