628678279546 has 8 divisors (see below), whose sum is σ = 943023348864. Its totient is φ = 314337163260.

The previous prime is 628678279459. The next prime is 628678279577. The reversal of 628678279546 is 645972876826.

It is a happy number.

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

It is a super-2 number, since 2×628678279546² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552180 + ... + 1249903.

It is an arithmetic number, because the mean of its divisors is an integer number (117877918608).

Almost surely, 2^628678279546 is an apocalyptic number.

628678279546 is a deficient number, since it is larger than the sum of its proper divisors (314345069318).

628678279546 is a wasteful number, since it uses less digits than its factorization.

628678279546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976516.

The product of its digits is 487710720, while the sum is 70.

The spelling of 628678279546 in words is "six hundred twenty-eight billion, six hundred seventy-eight million, two hundred seventy-nine thousand, five hundred forty-six".