620289747 has 24 divisors (see below), whose sum is σ = 1117059840. Its totient is φ = 322228080.

The previous prime is 620289743. The next prime is 620289767. The reversal of 620289747 is 747982026.

It is not a de Polignac number, because 620289747 - 2² = 620289743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620289743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 446847 + ... + 448232.

It is an arithmetic number, because the mean of its divisors is an integer number (46544160).

Almost surely, 2^620289747 is an apocalyptic number.

620289747 is a deficient number, since it is larger than the sum of its proper divisors (496770093).

620289747 is a wasteful number, since it uses less digits than its factorization.

620289747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895103 (or 895100 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 620289747 is about 24905.6167761411. The cubic root of 620289747 is about 852.8347098009.

The spelling of 620289747 in words is "six hundred twenty million, two hundred eighty-nine thousand, seven hundred forty-seven".