620135377 has 4 divisors (see below), whose sum is σ = 640139776. Its totient is φ = 600130980.

The previous prime is 620135363. The next prime is 620135381. The reversal of 620135377 is 773531026.

620135377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 773531026 = 2 ⋅386765513.

It is a cyclic number.

It is not a de Polignac number, because 620135377 - 2¹⁹ = 619611089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620135077) 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, 10002153 + ... + 10002214.

It is an arithmetic number, because the mean of its divisors is an integer number (160034944).

Almost surely, 2^620135377 is an apocalyptic number.

It is an amenable number.

620135377 is a deficient number, since it is larger than the sum of its proper divisors (20004399).

620135377 is a wasteful number, since it uses less digits than its factorization.

620135377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20004398.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 620135377 is about 24902.5174831783. The cubic root of 620135377 is about 852.7639562981.

The spelling of 620135377 in words is "six hundred twenty million, one hundred thirty-five thousand, three hundred seventy-seven".