628390556734 has 4 divisors (see below), whose sum is σ = 942585835104. Its totient is φ = 314195278366.

The previous prime is 628390556713. The next prime is 628390556771. The reversal of 628390556734 is 437655093826.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157097639182 + ... + 157097639185.

It is an arithmetic number, because the mean of its divisors is an integer number (235646458776).

Almost surely, 2^628390556734 is an apocalyptic number.

628390556734 is a deficient number, since it is larger than the sum of its proper divisors (314195278370).

628390556734 is a wasteful number, since it uses less digits than its factorization.

628390556734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314195278369.

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 628390556734 in words is "six hundred twenty-eight billion, three hundred ninety million, five hundred fifty-six thousand, seven hundred thirty-four".