2738623 has 2 divisors, whose sum is σ = 2738624. Its totient is φ = 2738622.

The previous prime is 2738621. The next prime is 2738639. The reversal of 2738623 is 3268372.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2738623 - 2¹ = 2738621 is a prime.

It is a super-2 number, since 2×2738623² = 15000111872258, which contains 22 as substring.

Together with 2738621, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2¹² + 7² + 3 + 8⁴ + 6⁸ + 2²⁰ + 3⁷ .

2738623 is a lucky number.

It is a plaindrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2738621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1369311 + 1369312.

It is an arithmetic number, because the mean of its divisors is an integer number (1369312).

2^2738623 is an apocalyptic number.

2738623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2738623 is an equidigital number, since it uses as much as digits as its factorization.

2738623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 2738623 is about 1654.8785453924. The cubic root of 2738623 is about 139.9084946260.

The spelling of 2738623 in words is "two million, seven hundred thirty-eight thousand, six hundred twenty-three".