620125621 has 8 divisors (see below), whose sum is σ = 624089088. Its totient is φ = 616170000.

The previous prime is 620125579. The next prime is 620125673. The reversal of 620125621 is 126521026.

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 620125621 - 2²³ = 611737013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620125691) 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, 262596 + ... + 264946.

It is an arithmetic number, because the mean of its divisors is an integer number (78011136).

Almost surely, 2^620125621 is an apocalyptic number.

It is an amenable number.

620125621 is a deficient number, since it is larger than the sum of its proper divisors (3963467).

620125621 is a wasteful number, since it uses less digits than its factorization.

620125621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 620125621 is about 24902.3215985980. The cubic root of 620125621 is about 852.7594843666.

Adding to 620125621 its reverse (126521026), we get a palindrome (746646647).

The spelling of 620125621 in words is "six hundred twenty million, one hundred twenty-five thousand, six hundred twenty-one".