102993647 has 4 divisors (see below), whose sum is σ = 103589160. Its totient is φ = 102398136.

The previous prime is 102993637. The next prime is 102993659. The reversal of 102993647 is 746399201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746399201 = 20641 ⋅36161.

It is a cyclic number.

It is not a de Polignac number, because 102993647 - 2¹⁰ = 102992623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102993637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297497 + ... + 297842.

It is an arithmetic number, because the mean of its divisors is an integer number (25897290).

Almost surely, 2^102993647 is an apocalyptic number.

102993647 is a deficient number, since it is larger than the sum of its proper divisors (595513).

102993647 is an equidigital number, since it uses as much as digits as its factorization.

102993647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595512.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 102993647 is about 10148.5785704206. The cubic root of 102993647 is about 468.7451770289.

The spelling of 102993647 in words is "one hundred two million, nine hundred ninety-three thousand, six hundred forty-seven".