620647301 has 4 divisors (see below), whose sum is σ = 620697792. Its totient is φ = 620596812.

The previous prime is 620647243. The next prime is 620647309. The reversal of 620647301 is 103746026.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620647301 is a prime.

It is a super-4 number, since 4×620647301⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620647309) 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, 6500 + ... + 35826.

It is an arithmetic number, because the mean of its divisors is an integer number (155174448).

Almost surely, 2^620647301 is an apocalyptic number.

It is an amenable number.

620647301 is a deficient number, since it is larger than the sum of its proper divisors (50491).

620647301 is a wasteful number, since it uses less digits than its factorization.

620647301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50490.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 620647301 is about 24912.7939219992. The cubic root of 620647301 is about 852.9985450036.

The spelling of 620647301 in words is "six hundred twenty million, six hundred forty-seven thousand, three hundred one".