623246399 has 4 divisors (see below), whose sum is σ = 625496664. Its totient is φ = 620996136.

The previous prime is 623246381. The next prime is 623246411. The reversal of 623246399 is 993642326.

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

It is a cyclic number.

It is not a de Polignac number, because 623246399 - 2¹⁶ = 623180863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623246359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1124717 + ... + 1125270.

It is an arithmetic number, because the mean of its divisors is an integer number (156374166).

Almost surely, 2^623246399 is an apocalyptic number.

623246399 is a deficient number, since it is larger than the sum of its proper divisors (2250265).

623246399 is a wasteful number, since it uses less digits than its factorization.

623246399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250264.

The product of its digits is 419904, while the sum is 44.

The square root of 623246399 is about 24964.9033444954. The cubic root of 623246399 is about 854.1875935046.

The spelling of 623246399 in words is "six hundred twenty-three million, two hundred forty-six thousand, three hundred ninety-nine".