628199097 has 8 divisors (see below), whose sum is σ = 864618240. Its totient is φ = 405289680.

The previous prime is 628199087. The next prime is 628199101. The reversal of 628199097 is 790991826.

It is a happy number.

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

It is not a de Polignac number, because 628199097 - 2⁴ = 628199081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628199027) 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, 3377322 + ... + 3377507.

It is an arithmetic number, because the mean of its divisors is an integer number (108077280).

Almost surely, 2^628199097 is an apocalyptic number.

It is an amenable number.

628199097 is a deficient number, since it is larger than the sum of its proper divisors (236419143).

628199097 is a wasteful number, since it uses less digits than its factorization.

628199097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6754863.

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 628199097 is about 25063.9002750969. The cubic root of 628199097 is about 856.4442591765. Note that the first 3 decimals are identical.

The spelling of 628199097 in words is "six hundred twenty-eight million, one hundred ninety-nine thousand, ninety-seven".