628506652 has 12 divisors (see below), whose sum is σ = 1100456280. Its totient is φ = 314090576.

The previous prime is 628506611. The next prime is 628506653. The reversal of 628506652 is 256605826.

It is a happy number.

It is a super-2 number, since 2×628506652² = 790041223216498208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628506653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31783 + ... + 47614.

It is an arithmetic number, because the mean of its divisors is an integer number (91704690).

Almost surely, 2^628506652 is an apocalyptic number.

It is an amenable number.

628506652 is a deficient number, since it is larger than the sum of its proper divisors (471949628).

628506652 is a wasteful number, since it uses less digits than its factorization.

628506652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81380 (or 81378 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 628506652 is about 25070.0349421376. The cubic root of 628506652 is about 856.5840029516.

The spelling of 628506652 in words is "six hundred twenty-eight million, five hundred six thousand, six hundred fifty-two".