628539297 has 8 divisors (see below), whose sum is σ = 839026944. Its totient is φ = 418538928.

The previous prime is 628539287. The next prime is 628539341. The reversal of 628539297 is 792935826.

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

It is not a de Polignac number, because 628539297 - 2⁴ = 628539281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628539217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118798 + ... + 123975.

It is an arithmetic number, because the mean of its divisors is an integer number (104878368).

Almost surely, 2^628539297 is an apocalyptic number.

It is an amenable number.

628539297 is a deficient number, since it is larger than the sum of its proper divisors (210487647).

628539297 is a wasteful number, since it uses less digits than its factorization.

628539297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243639.

The product of its digits is 1632960, while the sum is 51.

The square root of 628539297 is about 25070.6860097605. The cubic root of 628539297 is about 856.5988331848.

The spelling of 628539297 in words is "six hundred twenty-eight million, five hundred thirty-nine thousand, two hundred ninety-seven".