620313745 has 8 divisors (see below), whose sum is σ = 747492480. Its totient is φ = 494173680.

The previous prime is 620313737. The next prime is 620313779. The reversal of 620313745 is 547313026.

620313745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 620313745 - 2³ = 620313737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258351 + ... + 260740.

It is an arithmetic number, because the mean of its divisors is an integer number (93436560).

Almost surely, 2^620313745 is an apocalyptic number.

It is an amenable number.

620313745 is a deficient number, since it is larger than the sum of its proper divisors (127178735).

620313745 is a wasteful number, since it uses less digits than its factorization.

620313745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519335.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 620313745 is about 24906.0985503551. The cubic root of 620313745 is about 852.8457079210.

The spelling of 620313745 in words is "six hundred twenty million, three hundred thirteen thousand, seven hundred forty-five".