620288747 has 8 divisors (see below), whose sum is σ = 677974416. Its totient is φ = 564027552.

The previous prime is 620288723. The next prime is 620288749. The reversal of 620288747 is 747882026.

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

It is a cyclic number.

It is not a de Polignac number, because 620288747 - 2¹⁶ = 620223211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620288698 and 620288707.

It is not an unprimeable number, because it can be changed into a prime (620288749) 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, 355208 + ... + 356949.

It is an arithmetic number, because the mean of its divisors is an integer number (84746802).

Almost surely, 2^620288747 is an apocalyptic number.

620288747 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

620288747 is a deficient number, since it is larger than the sum of its proper divisors (57685669).

620288747 is a wasteful number, since it uses less digits than its factorization.

620288747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712237.

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 620288747 is about 24905.5967003403. The cubic root of 620288747 is about 852.8342515015.

It can be divided in two parts, 6202 and 88747, that added together give a palindrome (94949).

The spelling of 620288747 in words is "six hundred twenty million, two hundred eighty-eight thousand, seven hundred forty-seven".