623450353 has 4 divisors (see below), whose sum is σ = 628209648. Its totient is φ = 618691060.

The previous prime is 623450341. The next prime is 623450357. The reversal of 623450353 is 353054326.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 353054326 = 2 ⋅176527163.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623450353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623450357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2379451 + ... + 2379712.

It is an arithmetic number, because the mean of its divisors is an integer number (157052412).

Almost surely, 2^623450353 is an apocalyptic number.

It is an amenable number.

623450353 is a deficient number, since it is larger than the sum of its proper divisors (4759295).

623450353 is a wasteful number, since it uses less digits than its factorization.

623450353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759294.

The product of its (nonzero) digits is 32400, while the sum is 31.

The square root of 623450353 is about 24968.9878248999. The cubic root of 623450353 is about 854.2807594267.

The spelling of 623450353 in words is "six hundred twenty-three million, four hundred fifty thousand, three hundred fifty-three".