678423253 has 8 divisors (see below), whose sum is σ = 714448800. Its totient is φ = 642429648.

The previous prime is 678423223. The next prime is 678423331. The reversal of 678423253 is 352324876.

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

It is a cyclic number.

It is not a de Polignac number, because 678423253 - 2⁹ = 678422741 is a prime.

It is a super-2 number, since 2×678423253² = 920516220422204018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678423223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44538 + ... + 57796.

It is an arithmetic number, because the mean of its divisors is an integer number (89306100).

Almost surely, 2^678423253 is an apocalyptic number.

It is an amenable number.

678423253 is a deficient number, since it is larger than the sum of its proper divisors (36025547).

678423253 is a wasteful number, since it uses less digits than its factorization.

678423253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15971.

The product of its digits is 241920, while the sum is 40.

The square root of 678423253 is about 26046.5593313205. The cubic root of 678423253 is about 878.6857331289.

The spelling of 678423253 in words is "six hundred seventy-eight million, four hundred twenty-three thousand, two hundred fifty-three".