625634 has 8 divisors (see below), whose sum is σ = 993708. Its totient is φ = 294400.

The previous prime is 625631. The next prime is 625637. The reversal of 625634 is 436526.

625634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (625631) and next prime (625637).

It can be written as a sum of positive squares in 2 ways, for example, as 616225 + 9409 = 785^2 + 97^2 .

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

It is a d-powerful number, because it can be written as 6² + 2¹³ + 6⁵ + 5⁷ + 3¹² + 4³ .

It is not an unprimeable number, because it can be changed into a prime (625631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9167 + ... + 9234.

2⁶²⁵⁶³⁴ is an apocalyptic number.

625634 is a deficient number, since it is larger than the sum of its proper divisors (368074).

625634 is a wasteful number, since it uses less digits than its factorization.

625634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18420.

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

The square root of 625634 is about 790.9702902132. The cubic root of 625634 is about 85.5276975572.

The spelling of 625634 in words is "six hundred twenty-five thousand, six hundred thirty-four".