620732601 has 6 divisors (see below), whose sum is σ = 896613770. Its totient is φ = 413821728.

The previous prime is 620732591. The next prime is 620732621. The reversal of 620732601 is 106237026.

It is a happy number.

620732601 is a `hidden beast` number, since 6 + 20 + 7 + 32 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 510986025 + 109746576 = 22605^2 + 10476^2 .

It is not a de Polignac number, because 620732601 - 2⁹ = 620732089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620732621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34485136 + ... + 34485153.

Almost surely, 2^620732601 is an apocalyptic number.

It is an amenable number.

620732601 is a deficient number, since it is larger than the sum of its proper divisors (275881169).

620732601 is a wasteful number, since it uses less digits than its factorization.

620732601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68970295 (or 68970292 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 620732601 is about 24914.5058349549. The cubic root of 620732601 is about 853.0376211116.

Adding to 620732601 its reverse (106237026), we get a palindrome (726969627).

The spelling of 620732601 in words is "six hundred twenty million, seven hundred thirty-two thousand, six hundred one".