620984161 has 8 divisors (see below), whose sum is σ = 718680320. Its totient is φ = 525534048.

The previous prime is 620984159. The next prime is 620984173. The reversal of 620984161 is 161489026.

It is a happy number.

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 620984161 - 2¹ = 620984159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620984161.

It is not an unprimeable number, because it can be changed into a prime (620984101) 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, 560916 + ... + 562021.

It is an arithmetic number, because the mean of its divisors is an integer number (89835040).

Almost surely, 2^620984161 is an apocalyptic number.

It is an amenable number.

620984161 is a deficient number, since it is larger than the sum of its proper divisors (97696159).

620984161 is a wasteful number, since it uses less digits than its factorization.

620984161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123023.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 620984161 is about 24919.5537881399. The cubic root of 620984161 is about 853.1528404302.

The spelling of 620984161 in words is "six hundred twenty million, nine hundred eighty-four thousand, one hundred sixty-one".