620525288 has 16 divisors (see below), whose sum is σ = 1165429860. Its totient is φ = 309744000.

The previous prime is 620525273. The next prime is 620525333. The reversal of 620525288 is 882525026.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 546530884 + 73994404 = 23378^2 + 8602^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59723 + ... + 69338.

Almost surely, 2^620525288 is an apocalyptic number.

It is an amenable number.

620525288 is a deficient number, since it is larger than the sum of its proper divisors (544904572).

620525288 is a wasteful number, since it uses less digits than its factorization.

620525288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129668 (or 129664 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 620525288 is about 24910.3449996181. The cubic root of 620525288 is about 852.9426443699.

The spelling of 620525288 in words is "six hundred twenty million, five hundred twenty-five thousand, two hundred eighty-eight".