6693993 has 6 divisors (see below), whose sum is σ = 9669114. Its totient is φ = 4462656.

The previous prime is 6693991. The next prime is 6693997. The reversal of 6693993 is 3993966.

It can be written as a sum of positive squares in only one way, i.e., 5076009 + 1617984 = 2253^2 + 1272^2 .

It is not a de Polignac number, because 6693993 - 2¹ = 6693991 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6693991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 371880 + ... + 371897.

It is an arithmetic number, because the mean of its divisors is an integer number (1611519).

Almost surely, 2^6693993 is an apocalyptic number.

It is an amenable number.

6693993 is a deficient number, since it is larger than the sum of its proper divisors (2975121).

6693993 is a wasteful number, since it uses less digits than its factorization.

6693993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743783 (or 743780 counting only the distinct ones).

The product of its digits is 236196, while the sum is 45.

The square root of 6693993 is about 2587.2752076267. The cubic root of 6693993 is about 188.4640058669.

The spelling of 6693993 in words is "six million, six hundred ninety-three thousand, nine hundred ninety-three".