628012101 has 4 divisors (see below), whose sum is σ = 837349472. Its totient is φ = 418674732.

The previous prime is 628012067. The next prime is 628012109. The reversal of 628012101 is 101210826.

628012101 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 not a de Polignac number, because 628012101 - 2⁶ = 628012037 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 (628012109) 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, 104668681 + ... + 104668686.

It is an arithmetic number, because the mean of its divisors is an integer number (209337368).

Almost surely, 2^628012101 is an apocalyptic number.

It is an amenable number.

628012101 is a deficient number, since it is larger than the sum of its proper divisors (209337371).

628012101 is a wasteful number, since it uses less digits than its factorization.

628012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209337370.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 628012101 is about 25060.1696123550. The cubic root of 628012101 is about 856.3592715004.

Adding to 628012101 its reverse (101210826), we get a palindrome (729222927).

It can be divided in two parts, 6280 and 12101, that added together give a palindrome (18381).

The spelling of 628012101 in words is "six hundred twenty-eight million, twelve thousand, one hundred one".