620113281 has 8 divisors (see below), whose sum is σ = 862766400. Its totient is φ = 395434512.

The previous prime is 620113237. The next prime is 620113309. The reversal of 620113281 is 182311026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 620113281 - 2¹⁰ = 620112257 is a prime.

It is a super-2 number, since 2×620113281² = 769080962545169922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (620113211) 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, 4493506 + ... + 4493643.

It is an arithmetic number, because the mean of its divisors is an integer number (107845800).

Almost surely, 2^620113281 is an apocalyptic number.

It is an amenable number.

620113281 is a deficient number, since it is larger than the sum of its proper divisors (242653119).

620113281 is a wasteful number, since it uses less digits than its factorization.

620113281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8987175.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 620113281 is about 24902.0738293018. The cubic root of 620113281 is about 852.7538279203.

The spelling of 620113281 in words is "six hundred twenty million, one hundred thirteen thousand, two hundred eighty-one".