623868085 has 8 divisors (see below), whose sum is σ = 752778936. Its totient is φ = 496336320.

The previous prime is 623868067. The next prime is 623868103. The reversal of 623868085 is 580868326.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (623868067) and next prime (623868103).

It can be written as a sum of positive squares in 4 ways, for example, as 61324561 + 562543524 = 7831^2 + 23718^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 623868085 - 2¹³ = 623859893 is a prime.

It is a super-2 number, since 2×623868085² = 778422774963134450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343774 + ... + 345583.

It is an arithmetic number, because the mean of its divisors is an integer number (94097367).

Almost surely, 2^623868085 is an apocalyptic number.

It is an amenable number.

623868085 is a deficient number, since it is larger than the sum of its proper divisors (128910851).

623868085 is a wasteful number, since it uses less digits than its factorization.

623868085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689543.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 623868085 is about 24977.3514408554. The cubic root of 623868085 is about 854.4715154537.

The spelling of 623868085 in words is "six hundred twenty-three million, eight hundred sixty-eight thousand, eighty-five".