678662253 has 32 divisors (see below), whose sum is σ = 1067886720. Its totient is φ = 424500480.

The previous prime is 678662203. The next prime is 678662279. The reversal of 678662253 is 352266876.

It is a happy number.

It is not a de Polignac number, because 678662253 - 2⁶ = 678662189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 678662199 and 678662208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678662203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157143 + ... + 161403.

It is an arithmetic number, because the mean of its divisors is an integer number (33371460).

Almost surely, 2^678662253 is an apocalyptic number.

It is an amenable number.

678662253 is a deficient number, since it is larger than the sum of its proper divisors (389224467).

678662253 is a wasteful number, since it uses less digits than its factorization.

678662253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634 (or 4628 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 678662253 is about 26051.1468653493. The cubic root of 678662253 is about 878.7889043342.

The spelling of 678662253 in words is "six hundred seventy-eight million, six hundred sixty-two thousand, two hundred fifty-three".