623436433 has 2 divisors, whose sum is σ = 623436434. Its totient is φ = 623436432.

The previous prime is 623436419. The next prime is 623436439. The reversal of 623436433 is 334634326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338265664 + 285170769 = 18392^2 + 16887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623436433 is a prime.

It is not a weakly prime, because it can be changed into another prime (623436439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311718216 + 311718217.

It is an arithmetic number, because the mean of its divisors is an integer number (311718217).

Almost surely, 2^623436433 is an apocalyptic number.

It is an amenable number.

623436433 is a deficient number, since it is larger than the sum of its proper divisors (1).

623436433 is an equidigital number, since it uses as much as digits as its factorization.

623436433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 34.

The square root of 623436433 is about 24968.7090775635. The cubic root of 623436433 is about 854.2744014349.

The spelling of 623436433 in words is "six hundred twenty-three million, four hundred thirty-six thousand, four hundred thirty-three".