620713547 has 4 divisors (see below), whose sum is σ = 620763696. Its totient is φ = 620663400.

The previous prime is 620713529. The next prime is 620713609. The reversal of 620713547 is 745317026.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 620713547 - 2¹² = 620709451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620703547) 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, 8297 + ... + 36197.

It is an arithmetic number, because the mean of its divisors is an integer number (155190924).

Almost surely, 2^620713547 is an apocalyptic number.

620713547 is a deficient number, since it is larger than the sum of its proper divisors (50149).

620713547 is a wasteful number, since it uses less digits than its factorization.

620713547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50148.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 620713547 is about 24914.1234443438. The cubic root of 620713547 is about 853.0288927449.

The spelling of 620713547 in words is "six hundred twenty million, seven hundred thirteen thousand, five hundred forty-seven".