620625311 has 8 divisors (see below), whose sum is σ = 624348000. Its totient is φ = 616913920.

The previous prime is 620625293. The next prime is 620625347. The reversal of 620625311 is 113526026.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620625311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620625371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123710 + ... + 128628.

It is an arithmetic number, because the mean of its divisors is an integer number (78043500).

Almost surely, 2^620625311 is an apocalyptic number.

620625311 is a deficient number, since it is larger than the sum of its proper divisors (3722689).

620625311 is a wasteful number, since it uses less digits than its factorization.

620625311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5649.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 620625311 is about 24912.3525785904. The cubic root of 620625311 is about 852.9884707583.

The spelling of 620625311 in words is "six hundred twenty million, six hundred twenty-five thousand, three hundred eleven".