620143355 has 16 divisors (see below), whose sum is σ = 801952704. Its totient is φ = 457645440.

The previous prime is 620143351. The next prime is 620143361. The reversal of 620143355 is 553341026.

It is not a de Polignac number, because 620143355 - 2² = 620143351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620143351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152762 + ... + 156768.

It is an arithmetic number, because the mean of its divisors is an integer number (50122044).

Almost surely, 2^620143355 is an apocalyptic number.

620143355 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

620143355 is a deficient number, since it is larger than the sum of its proper divisors (181809349).

620143355 is a wasteful number, since it uses less digits than its factorization.

620143355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6406.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 620143355 is about 24902.6776672710. The cubic root of 620143355 is about 852.7676131994.

The spelling of 620143355 in words is "six hundred twenty million, one hundred forty-three thousand, three hundred fifty-five".