620804520001 has 8 divisors (see below), whose sum is σ = 622899225000. Its totient is φ = 618712373760.

The previous prime is 620804519989. The next prime is 620804520047. The reversal of 620804520001 is 100025408026.

It can be written as a sum of positive squares in 4 ways, for example, as 183650817025 + 437153702976 = 428545^2 + 661176^2 .

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 620804520001 - 2³¹ = 618657036353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620804524001) 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, 153010 + ... + 1124731.

It is an arithmetic number, because the mean of its divisors is an integer number (77862403125).

Almost surely, 2^620804520001 is an apocalyptic number.

It is an amenable number.

620804520001 is a deficient number, since it is larger than the sum of its proper divisors (2094704999).

620804520001 is a wasteful number, since it uses less digits than its factorization.

620804520001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279379.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 620804520001 its reverse (100025408026), we get a palindrome (720829928027).

It can be divided in two parts, 620804 and 520001, that added together give a triangular number (1140805 = T₁₅₁₀).

The spelling of 620804520001 in words is "six hundred twenty billion, eight hundred four million, five hundred twenty thousand, one".