628696836 has 48 divisors (see below), whose sum is σ = 1641890880. Its totient is φ = 208031040.

The previous prime is 628696823. The next prime is 628696841. The reversal of 628696836 is 638696826.

628696836 is a `hidden beast` number, since 628 + 6 + 9 + 6 + 8 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6450 + ... + 36041.

It is an arithmetic number, because the mean of its divisors is an integer number (34206060).

Almost surely, 2^628696836 is an apocalyptic number.

It is an amenable number.

628696836 is an abundant number, since it is smaller than the sum of its proper divisors (1013194044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628696836 is a wasteful number, since it uses less digits than its factorization.

628696836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42641 (or 42633 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 628696836 is about 25073.8277093865. The cubic root of 628696836 is about 856.6703940515.

The spelling of 628696836 in words is "six hundred twenty-eight million, six hundred ninety-six thousand, eight hundred thirty-six".