620148889 has 8 divisors (see below), whose sum is σ = 626745600. Its totient is φ = 613563456.

The previous prime is 620148887. The next prime is 620148929. The reversal of 620148889 is 988841026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 620148889 - 2¹ = 620148887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620148887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151137 + ... + 155185.

It is an arithmetic number, because the mean of its divisors is an integer number (78343200).

Almost surely, 2^620148889 is an apocalyptic number.

It is an amenable number.

620148889 is a deficient number, since it is larger than the sum of its proper divisors (6596711).

620148889 is a wasteful number, since it uses less digits than its factorization.

620148889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 620148889 is about 24902.7887795725. The cubic root of 620148889 is about 852.7701498183.

The spelling of 620148889 in words is "six hundred twenty million, one hundred forty-eight thousand, eight hundred eighty-nine".