623426049 has 12 divisors (see below), whose sum is σ = 900728400. Its totient is φ = 415513944.

The previous prime is 623426009. The next prime is 623426071. The reversal of 623426049 is 940624326.

623426049 is a `hidden beast` number, since 6 + 2 + 3 + 42 + 604 + 9 = 666.

It is not a de Polignac number, because 623426049 - 2¹⁷ = 623294977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (623426009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51982 + ... + 62840.

It is an arithmetic number, because the mean of its divisors is an integer number (75060700).

Almost surely, 2^623426049 is an apocalyptic number.

It is an amenable number.

623426049 is a deficient number, since it is larger than the sum of its proper divisors (277302351).

623426049 is a wasteful number, since it uses less digits than its factorization.

623426049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17244 (or 17241 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 623426049 is about 24968.5011364319. The cubic root of 623426049 is about 854.2696584575.

The spelling of 623426049 in words is "six hundred twenty-three million, four hundred twenty-six thousand, forty-nine".