620377841 has 4 divisors (see below), whose sum is σ = 620745972. Its totient is φ = 620009712.

The previous prime is 620377829. The next prime is 620377897. The reversal of 620377841 is 148773026.

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 86583025 + 533794816 = 9305^2 + 23104^2 .

It is a cyclic number.

It is not a de Polignac number, because 620377841 - 2²⁶ = 553268977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 620377795 and 620377804.

It is not an unprimeable number, because it can be changed into a prime (620377801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181526 + ... + 184911.

It is an arithmetic number, because the mean of its divisors is an integer number (155186493).

Almost surely, 2^620377841 is an apocalyptic number.

It is an amenable number.

620377841 is a deficient number, since it is larger than the sum of its proper divisors (368131).

620377841 is a wasteful number, since it uses less digits than its factorization.

620377841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368130.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 620377841 is about 24907.3852702366. The cubic root of 620377841 is about 852.8750812912.

The spelling of 620377841 in words is "six hundred twenty million, three hundred seventy-seven thousand, eight hundred forty-one".