620401237847 has 4 divisors (see below), whose sum is σ = 627875951640. Its totient is φ = 612926524056.

The previous prime is 620401237843. The next prime is 620401237877. The reversal of 620401237847 is 748732104026.

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

It is a cyclic number.

It is not a de Polignac number, because 620401237847 - 2² = 620401237843 is a prime.

It is a super-3 number, since 3×620401237847³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620401237798 and 620401237807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620401237843) 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, 3737356772 + ... + 3737356937.

It is an arithmetic number, because the mean of its divisors is an integer number (156968987910).

Almost surely, 2^620401237847 is an apocalyptic number.

620401237847 is a deficient number, since it is larger than the sum of its proper divisors (7474713793).

620401237847 is an equidigital number, since it uses as much as digits as its factorization.

620401237847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7474713792.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 620401237847 in words is "six hundred twenty billion, four hundred one million, two hundred thirty-seven thousand, eight hundred forty-seven".