102745633 has 4 divisors (see below), whose sum is σ = 105522580. Its totient is φ = 99968688.

The previous prime is 102745607. The next prime is 102745649. The reversal of 102745633 is 336547201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90022144 + 12723489 = 9488^2 + 3567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102745633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102745595 and 102745604.

It is not an unprimeable number, because it can be changed into a prime (102745663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388418 + ... + 1388491.

It is an arithmetic number, because the mean of its divisors is an integer number (26380645).

Almost surely, 2^102745633 is an apocalyptic number.

It is an amenable number.

102745633 is a deficient number, since it is larger than the sum of its proper divisors (2776947).

102745633 is an equidigital number, since it uses as much as digits as its factorization.

102745633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776946.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 102745633 is about 10136.3520558434. The cubic root of 102745633 is about 468.3686204449.

The spelling of 102745633 in words is "one hundred two million, seven hundred forty-five thousand, six hundred thirty-three".