620104631 has 8 divisors (see below), whose sum is σ = 666382320. Its totient is φ = 574915968.

The previous prime is 620104543. The next prime is 620104637. The reversal of 620104631 is 136401026.

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 a de Polignac number, because none of the positive numbers 2^k-620104631 is a prime.

It is a super-2 number, since 2×620104631² = 769059506775292322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 620104597 and 620104606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620104637) 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 7 ways as a sum of consecutive naturals, for example, 271076 + ... + 273353.

It is an arithmetic number, because the mean of its divisors is an integer number (83297790).

Almost surely, 2^620104631 is an apocalyptic number.

620104631 is a deficient number, since it is larger than the sum of its proper divisors (46277689).

620104631 is a wasteful number, since it uses less digits than its factorization.

620104631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544513.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 620104631 is about 24901.9001483823. The cubic root of 620104631 is about 852.7498628625.

Adding to 620104631 its reverse (136401026), we get a palindrome (756505657).

The spelling of 620104631 in words is "six hundred twenty million, one hundred four thousand, six hundred thirty-one".