620981373 has 4 divisors (see below), whose sum is σ = 827975168. Its totient is φ = 413987580.

The previous prime is 620981369. The next prime is 620981377. The reversal of 620981373 is 373189026.

620981373 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.

It is an interprime number because it is at equal distance from previous prime (620981369) and next prime (620981377).

It is not a de Polignac number, because 620981373 - 2² = 620981369 is a prime.

It is a super-2 number, since 2×620981373² = 771235731225930258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620981377) 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, 103496893 + ... + 103496898.

It is an arithmetic number, because the mean of its divisors is an integer number (206993792).

Almost surely, 2^620981373 is an apocalyptic number.

It is an amenable number.

620981373 is a deficient number, since it is larger than the sum of its proper divisors (206993795).

620981373 is a wasteful number, since it uses less digits than its factorization.

620981373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206993794.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 620981373 is about 24919.4978480707. The cubic root of 620981373 is about 853.1515636431.

The spelling of 620981373 in words is "six hundred twenty million, nine hundred eighty-one thousand, three hundred seventy-three".