628970801 has 4 divisors (see below), whose sum is σ = 629182704. Its totient is φ = 628758900.

The previous prime is 628970789. The next prime is 628970819. The reversal of 628970801 is 108079826.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 628970801 - 2²² = 624776497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628970891) 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, 101435 + ... + 107456.

It is an arithmetic number, because the mean of its divisors is an integer number (157295676).

Almost surely, 2^628970801 is an apocalyptic number.

It is an amenable number.

628970801 is a deficient number, since it is larger than the sum of its proper divisors (211903).

628970801 is a wasteful number, since it uses less digits than its factorization.

628970801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211902.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 628970801 is about 25079.2902810267. The cubic root of 628970801 is about 856.7948120583.

The spelling of 628970801 in words is "six hundred twenty-eight million, nine hundred seventy thousand, eight hundred one".