693750009 has 16 divisors (see below), whose sum is σ = 932659200. Its totient is φ = 458685840.

The previous prime is 693750007. The next prime is 693750041. The reversal of 693750009 is 900057396.

It is not a de Polignac number, because 693750009 - 2¹ = 693750007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (693750007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208642 + ... + 211940.

It is an arithmetic number, because the mean of its divisors is an integer number (58291200).

Almost surely, 2^693750009 is an apocalyptic number.

It is an amenable number.

693750009 is a deficient number, since it is larger than the sum of its proper divisors (238909191).

693750009 is a wasteful number, since it uses less digits than its factorization.

693750009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 693750009 is about 26339.1345529803. The cubic root of 693750009 is about 885.2535300954.

The spelling of 693750009 in words is "six hundred ninety-three million, seven hundred fifty thousand, nine".