620581263 has 4 divisors (see below), whose sum is σ = 827441688. Its totient is φ = 413720840.

The previous prime is 620581259. The next prime is 620581267. The reversal of 620581263 is 362185026.

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

It is an interprime number because it is at equal distance from previous prime (620581259) and next prime (620581267).

It is a cyclic number.

It is not a de Polignac number, because 620581263 - 2² = 620581259 is a prime.

It is a super-2 number, since 2×620581263² = 770242207973350338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620581267) 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 3 ways as a sum of consecutive naturals, for example, 103430208 + ... + 103430213.

It is an arithmetic number, because the mean of its divisors is an integer number (206860422).

Almost surely, 2^620581263 is an apocalyptic number.

620581263 is a deficient number, since it is larger than the sum of its proper divisors (206860425).

620581263 is a wasteful number, since it uses less digits than its factorization.

620581263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206860424.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 620581263 is about 24911.4685034825. The cubic root of 620581263 is about 852.9682903991.

The spelling of 620581263 in words is "six hundred twenty million, five hundred eighty-one thousand, two hundred sixty-three".