2623993 has 2 divisors, whose sum is σ = 2623994. Its totient is φ = 2623992.

The previous prime is 2623991. The next prime is 2623997. The reversal of 2623993 is 3993262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1617984 + 1006009 = 1272^2 + 1003^2 .

It is a cyclic number.

It is not a de Polignac number, because 2623993 - 2¹ = 2623991 is a prime.

Together with 2623991, it forms a pair of twin primes.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (2623991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1311996 + 1311997.

It is an arithmetic number, because the mean of its divisors is an integer number (1311997).

2^2623993 is an apocalyptic number.

It is an amenable number.

2623993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2623993 is an equidigital number, since it uses as much as digits as its factorization.

2623993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 34.

The square root of 2623993 is about 1619.8743778454. The cubic root of 2623993 is about 137.9285669652.

The spelling of 2623993 in words is "two million, six hundred twenty-three thousand, nine hundred ninety-three".