693309228 has 12 divisors (see below), whose sum is σ = 1617721560. Its totient is φ = 231103072.

The previous prime is 693309161. The next prime is 693309241. The reversal of 693309228 is 822903396.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 693309228.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28887873 + ... + 28887896.

It is an arithmetic number, because the mean of its divisors is an integer number (134810130).

Almost surely, 2^693309228 is an apocalyptic number.

It is an amenable number.

693309228 is an abundant number, since it is smaller than the sum of its proper divisors (924412332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

693309228 is a wasteful number, since it uses less digits than its factorization.

693309228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57775776 (or 57775774 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 693309228 is about 26330.7658073213. The cubic root of 693309228 is about 885.0660054827.

The spelling of 693309228 in words is "six hundred ninety-three million, three hundred nine thousand, two hundred twenty-eight".