620628619 has 12 divisors (see below), whose sum is σ = 698700016. Its totient is φ = 547973712.

The previous prime is 620628583. The next prime is 620628629. The reversal of 620628619 is 916826026.

It is a happy number.

620628619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 620628619 - 2¹⁷ = 620497547 is a prime.

It is a super-2 number, since 2×620628619² = 770359765443694322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620628629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38247 + ... + 52000.

Almost surely, 2^620628619 is an apocalyptic number.

620628619 is a deficient number, since it is larger than the sum of its proper divisors (78071397).

620628619 is a wasteful number, since it uses less digits than its factorization.

620628619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90306 (or 90283 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 620628619 is about 24912.4189712681. The cubic root of 620628619 is about 852.9899862625.

The spelling of 620628619 in words is "six hundred twenty million, six hundred twenty-eight thousand, six hundred nineteen".