623465 has 4 divisors (see below), whose sum is σ = 748164. Its totient is φ = 498768.

The previous prime is 623437. The next prime is 623477. The reversal of 623465 is 564326.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 177241 + 446224 = 421^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 623465 - 2⁶ = 623401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62342 + ... + 62351.

It is an arithmetic number, because the mean of its divisors is an integer number (187041).

2⁶²³⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

623465 is a deficient number, since it is larger than the sum of its proper divisors (124699).

623465 is a wasteful number, since it uses less digits than its factorization.

623465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124698.

The product of its digits is 4320, while the sum is 26.

The square root of 623465 is about 789.5979989843. The cubic root of 623465 is about 85.4287449375.

The spelling of 623465 in words is "six hundred twenty-three thousand, four hundred sixty-five".