102644493 has 8 divisors (see below), whose sum is σ = 156410688. Its totient is φ = 58653984.

The previous prime is 102644491. The next prime is 102644519. The reversal of 102644493 is 394446201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102644493 - 2¹ = 102644491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102644491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2443896 + ... + 2443937.

It is an arithmetic number, because the mean of its divisors is an integer number (19551336).

Almost surely, 2^102644493 is an apocalyptic number.

It is an amenable number.

102644493 is a deficient number, since it is larger than the sum of its proper divisors (53766195).

102644493 is an equidigital number, since it uses as much as digits as its factorization.

102644493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887843.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 102644493 is about 10131.3618531765. The cubic root of 102644493 is about 468.2148868898.

The spelling of 102644493 in words is "one hundred two million, six hundred forty-four thousand, four hundred ninety-three".