628240990979 has 8 divisors (see below), whose sum is σ = 729760027488. Its totient is φ = 529664535360.

The previous prime is 628240990921. The next prime is 628240990999. The reversal of 628240990979 is 979099042826.

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 628240990979 - 2¹² = 628240986883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628240990999) 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, 735644762 + ... + 735645615.

It is an arithmetic number, because the mean of its divisors is an integer number (91220003436).

Almost surely, 2^628240990979 is an apocalyptic number.

628240990979 is a deficient number, since it is larger than the sum of its proper divisors (101519036509).

628240990979 is a wasteful number, since it uses less digits than its factorization.

628240990979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471290445.

The product of its (nonzero) digits is 35271936, while the sum is 65.

The spelling of 628240990979 in words is "six hundred twenty-eight billion, two hundred forty million, nine hundred ninety thousand, nine hundred seventy-nine".