623266447 has 2 divisors, whose sum is σ = 623266448. Its totient is φ = 623266446.

The previous prime is 623266421. The next prime is 623266453. The reversal of 623266447 is 744662326.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 623266447 - 2²⁷ = 489048719 is a prime.

It is a super-2 number, since 2×623266447² = 776922127912007618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623266477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311633223 + 311633224.

It is an arithmetic number, because the mean of its divisors is an integer number (311633224).

Almost surely, 2^623266447 is an apocalyptic number.

623266447 is a deficient number, since it is larger than the sum of its proper divisors (1).

623266447 is an equidigital number, since it uses as much as digits as its factorization.

623266447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 40.

The square root of 623266447 is about 24965.3048649521. The cubic root of 623266447 is about 854.1967523056.

The spelling of 623266447 in words is "six hundred twenty-three million, two hundred sixty-six thousand, four hundred forty-seven".