620315963 has 4 divisors (see below), whose sum is σ = 620709408. Its totient is φ = 619922520.

The previous prime is 620315959. The next prime is 620315977. The reversal of 620315963 is 369513026.

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 620315963 - 2² = 620315959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620314963) 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, 194348 + ... + 197513.

It is an arithmetic number, because the mean of its divisors is an integer number (155177352).

Almost surely, 2^620315963 is an apocalyptic number.

620315963 is a deficient number, since it is larger than the sum of its proper divisors (393445).

620315963 is a wasteful number, since it uses less digits than its factorization.

620315963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393444.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 620315963 is about 24906.1430775622. The cubic root of 620315963 is about 852.8467244010.

Adding to 620315963 its reverse (369513026), we get a palindrome (989828989).

The spelling of 620315963 in words is "six hundred twenty million, three hundred fifteen thousand, nine hundred sixty-three".