623458 has 16 divisors (see below), whose sum is σ = 1080864. Its totient is φ = 266560.

The previous prime is 623437. The next prime is 623477. The reversal of 623458 is 854326.

It is an unprimeable number.

623458 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460 + ... + 1207.

It is an arithmetic number, because the mean of its divisors is an integer number (67554).

2⁶²³⁴⁵⁸ is an apocalyptic number.

623458 is a deficient number, since it is larger than the sum of its proper divisors (457406).

623458 is a wasteful number, since it uses less digits than its factorization.

623458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697.

The product of its digits is 5760, while the sum is 28.

The square root of 623458 is about 789.5935663365. The cubic root of 623458 is about 85.4284252171.

It can be divided in two parts, 623 and 458, that added together give a triangular number (1081 = T₄₆).

The spelling of 623458 in words is "six hundred twenty-three thousand, four hundred fifty-eight".