628787107 has 8 divisors (see below), whose sum is σ = 677793536. Its totient is φ = 579871872.

The previous prime is 628787063. The next prime is 628787123. The reversal of 628787107 is 701787826.

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

It is a cyclic number.

It is not a de Polignac number, because 628787107 - 2¹⁵ = 628754339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628737107) 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, 8118 + ... + 36379.

It is an arithmetic number, because the mean of its divisors is an integer number (84724192).

Almost surely, 2^628787107 is an apocalyptic number.

628787107 is a deficient number, since it is larger than the sum of its proper divisors (49006429).

628787107 is a wasteful number, since it uses less digits than its factorization.

628787107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45597.

The product of its (nonzero) digits is 263424, while the sum is 46.

The square root of 628787107 is about 25075.6277488720. The cubic root of 628787107 is about 856.7113935644.

The spelling of 628787107 in words is "six hundred twenty-eight million, seven hundred eighty-seven thousand, one hundred seven".