620377707 has 4 divisors (see below), whose sum is σ = 827170280. Its totient is φ = 413585136.

The previous prime is 620377691. The next prime is 620377729. The reversal of 620377707 is 707773026.

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

It is not a de Polignac number, because 620377707 - 2⁴ = 620377691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620377207) 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, 103396282 + ... + 103396287.

It is an arithmetic number, because the mean of its divisors is an integer number (206792570).

Almost surely, 2^620377707 is an apocalyptic number.

620377707 is a deficient number, since it is larger than the sum of its proper divisors (206792573).

620377707 is a wasteful number, since it uses less digits than its factorization.

620377707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206792572.

The product of its (nonzero) digits is 86436, while the sum is 39.

The square root of 620377707 is about 24907.3825802713. The cubic root of 620377707 is about 852.8750198849.

The spelling of 620377707 in words is "six hundred twenty million, three hundred seventy-seven thousand, seven hundred seven".