620501471 has 4 divisors (see below), whose sum is σ = 628356000. Its totient is φ = 612646944.

The previous prime is 620501459. The next prime is 620501491. The reversal of 620501471 is 174105026.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620501471 is a prime.

It is a super-3 number, since 3×620501471³ (a number of 27 digits) contains 333 as substring.

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 620501471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620501491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3927146 + ... + 3927303.

It is an arithmetic number, because the mean of its divisors is an integer number (157089000).

Almost surely, 2^620501471 is an apocalyptic number.

620501471 is a deficient number, since it is larger than the sum of its proper divisors (7854529).

620501471 is an equidigital number, since it uses as much as digits as its factorization.

620501471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7854528.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 620501471 is about 24909.8669406322. The cubic root of 620501471 is about 852.9317316828.

Adding to 620501471 its reverse (174105026), we get a palindrome (794606497).

The spelling of 620501471 in words is "six hundred twenty million, five hundred one thousand, four hundred seventy-one".