620071429 has 4 divisors (see below), whose sum is σ = 623497420. Its totient is φ = 616645440.

The previous prime is 620071391. The next prime is 620071451. The reversal of 620071429 is 924170026.

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

It can be written as a sum of positive squares in 2 ways, for example, as 302412100 + 317659329 = 17390^2 + 17823^2 .

It is a cyclic number.

It is not a de Polignac number, because 620071429 - 2¹³ = 620063237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620071429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620071469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712724 + ... + 1713085.

It is an arithmetic number, because the mean of its divisors is an integer number (155874355).

Almost surely, 2^620071429 is an apocalyptic number.

It is an amenable number.

620071429 is a deficient number, since it is larger than the sum of its proper divisors (3425991).

620071429 is a wasteful number, since it uses less digits than its factorization.

620071429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425990.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 620071429 is about 24901.2334835044. The cubic root of 620071429 is about 852.7346431158.

It can be divided in two parts, 62007 and 1429, that added together give a palindrome (63436).

The spelling of 620071429 in words is "six hundred twenty million, seventy-one thousand, four hundred twenty-nine".