82698993 has 12 divisors (see below), whose sum is σ = 128643060. Its totient is φ = 50891616.

The previous prime is 82698977. The next prime is 82699003. The reversal of 82698993 is 39989628.

It can be written as a sum of positive squares in 2 ways, for example, as 47983329 + 34715664 = 6927^2 + 5892^2 .

It is not a de Polignac number, because 82698993 - 2⁴ = 82698977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82698953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353298 + ... + 353531.

It is an arithmetic number, because the mean of its divisors is an integer number (10720255).

Almost surely, 2^82698993 is an apocalyptic number.

It is an amenable number.

82698993 is a deficient number, since it is larger than the sum of its proper divisors (45944067).

82698993 is a wasteful number, since it uses less digits than its factorization.

82698993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706848 (or 706845 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 82698993 is about 9093.8986688878. The cubic root of 82698993 is about 435.6791136247.

The spelling of 82698993 in words is "eighty-two million, six hundred ninety-eight thousand, nine hundred ninety-three".