1002623 has 2 divisors, whose sum is σ = 1002624. Its totient is φ = 1002622.

The previous prime is 1002619. The next prime is 1002647. The reversal of 1002623 is 3262001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002623 - 2² = 1002619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002598 and 1002607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501311 + 501312.

It is an arithmetic number, because the mean of its divisors is an integer number (501312).

2^1002623 is an apocalyptic number.

1002623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002623 is an equidigital number, since it uses as much as digits as its factorization.

1002623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1002623 is about 1001.3106411099. The cubic root of 1002623 is about 100.0873569987.

Adding to 1002623 its reverse (3262001), we get a palindrome (4264624).

The spelling of 1002623 in words is "one million, two thousand, six hundred twenty-three".