670625 has 20 divisors (see below), whose sum is σ = 890340. Its totient is φ = 504000.

The previous prime is 670619. The next prime is 670627. The reversal of 670625 is 526076.

670625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 10 ways, for example, as 364816 + 305809 = 604^2 + 553^2 .

It is not a de Polignac number, because 670625 - 2¹² = 666529 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 670594 and 670603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670627) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18107 + ... + 18143.

It is an arithmetic number, because the mean of its divisors is an integer number (44517).

2⁶⁷⁰⁶²⁵ is an apocalyptic number.

It is an amenable number.

670625 is a deficient number, since it is larger than the sum of its proper divisors (219715).

670625 is an equidigital number, since it uses as much as digits as its factorization.

670625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 670625 is about 818.9169677080. The cubic root of 670625 is about 87.5306015413.

The spelling of 670625 in words is "six hundred seventy thousand, six hundred twenty-five".