628054964 has 6 divisors (see below), whose sum is σ = 1099096194. Its totient is φ = 314027480.

The previous prime is 628054939. The next prime is 628054967. The reversal of 628054964 is 469450826.

It can be written as a sum of positive squares in only one way, i.e., 465696400 + 162358564 = 21580^2 + 12742^2 .

It is a super-3 number, since 3×628054964³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628054967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78506867 + ... + 78506874.

It is an arithmetic number, because the mean of its divisors is an integer number (183182699).

Almost surely, 2^628054964 is an apocalyptic number.

It is an amenable number.

628054964 is a deficient number, since it is larger than the sum of its proper divisors (471041230).

628054964 is a wasteful number, since it uses less digits than its factorization.

628054964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157013745 (or 157013743 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 628054964 is about 25061.0247994770. The cubic root of 628054964 is about 856.3787537643.

The spelling of 628054964 in words is "six hundred twenty-eight million, fifty-four thousand, nine hundred sixty-four".