620102019 has 4 divisors (see below), whose sum is σ = 826802696. Its totient is φ = 413401344.

The previous prime is 620101969. The next prime is 620102051. The reversal of 620102019 is 910201026.

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

It is not a de Polignac number, because 620102019 - 2²⁰ = 619053443 is a prime.

It is a super-2 number, since 2×620102019² = 769053027935752722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620101986 and 620102004.

It is not an unprimeable number, because it can be changed into a prime (620182019) 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, 103350334 + ... + 103350339.

It is an arithmetic number, because the mean of its divisors is an integer number (206700674).

Almost surely, 2^620102019 is an apocalyptic number.

620102019 is a deficient number, since it is larger than the sum of its proper divisors (206700677).

620102019 is a wasteful number, since it uses less digits than its factorization.

620102019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206700676.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 620102019 is about 24901.8477025300. The cubic root of 620102019 is about 852.7486655454.

The spelling of 620102019 in words is "six hundred twenty million, one hundred two thousand, nineteen".