625678 has 4 divisors (see below), whose sum is σ = 938520. Its totient is φ = 312838.

The previous prime is 625663. The next prime is 625697. The reversal of 625678 is 876526.

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

It is a d-powerful number, because it can be written as 6² + 2¹⁶ + 6⁷ + 5⁶ + 7⁴ + 8⁶ .

It is a congruent number.

It is an unprimeable number.

625678 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 as a sum of consecutive naturals, namely, 156418 + ... + 156421.

It is an arithmetic number, because the mean of its divisors is an integer number (234630).

2⁶²⁵⁶⁷⁸ is an apocalyptic number.

625678 is a deficient number, since it is larger than the sum of its proper divisors (312842).

625678 is a wasteful number, since it uses less digits than its factorization.

625678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312841.

The product of its digits is 20160, while the sum is 34.

The square root of 625678 is about 790.9981036640. The cubic root of 625678 is about 85.5297025263.

The spelling of 625678 in words is "six hundred twenty-five thousand, six hundred seventy-eight".