1145623 has 2 divisors, whose sum is σ = 1145624. Its totient is φ = 1145622.

The previous prime is 1145621. The next prime is 1145659. The reversal of 1145623 is 3265411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145623 - 2¹ = 1145621 is a prime.

Together with 1145621, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1145594 and 1145603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572811 + 572812.

It is an arithmetic number, because the mean of its divisors is an integer number (572812).

2^1145623 is an apocalyptic number.

1145623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145623 is an equidigital number, since it uses as much as digits as its factorization.

1145623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 1145623 is about 1070.3377971463. The cubic root of 1145623 is about 104.6358664067.

The spelling of 1145623 in words is "one million, one hundred forty-five thousand, six hundred twenty-three".