620641371 has 8 divisors (see below), whose sum is σ = 945739264. Its totient is φ = 354652200.

The previous prime is 620641369. The next prime is 620641393. The reversal of 620641371 is 173146026.

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

It is not a de Polignac number, because 620641371 - 2¹ = 620641369 is a prime.

It is a super-2 number, since 2×620641371² = 770391422793519282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620141371) 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, 14777155 + ... + 14777196.

It is an arithmetic number, because the mean of its divisors is an integer number (118217408).

Almost surely, 2^620641371 is an apocalyptic number.

620641371 is a deficient number, since it is larger than the sum of its proper divisors (325097893).

620641371 is a wasteful number, since it uses less digits than its factorization.

620641371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29554361.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 620641371 is about 24912.6749065611. The cubic root of 620641371 is about 852.9958283251.

Adding to 620641371 its reverse (173146026), we get a palindrome (793787397).

The spelling of 620641371 in words is "six hundred twenty million, six hundred forty-one thousand, three hundred seventy-one".