620766143 has 4 divisors (see below), whose sum is σ = 621277440. Its totient is φ = 620254848.

The previous prime is 620766127. The next prime is 620766151. The reversal of 620766143 is 341667026.

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

It is a cyclic number.

It is not a de Polignac number, because 620766143 - 2⁴ = 620766127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620766193) 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, 253823 + ... + 256256.

It is an arithmetic number, because the mean of its divisors is an integer number (155319360).

Almost surely, 2^620766143 is an apocalyptic number.

620766143 is a deficient number, since it is larger than the sum of its proper divisors (511297).

620766143 is a wasteful number, since it uses less digits than its factorization.

620766143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511296.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 620766143 is about 24915.1789678501. The cubic root of 620766143 is about 853.0529857911.

The spelling of 620766143 in words is "six hundred twenty million, seven hundred sixty-six thousand, one hundred forty-three".