670425 has 24 divisors (see below), whose sum is σ = 1267776. Its totient is φ = 306240.

The previous prime is 670409. The next prime is 670447. The reversal of 670425 is 524076.

It is a happy number.

It is not a de Polignac number, because 670425 - 2⁴ = 670409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670395 and 670404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (52824).

2⁶⁷⁰⁴²⁵ is an apocalyptic number.

It is an amenable number.

670425 is a deficient number, since it is larger than the sum of its proper divisors (597351).

670425 is a wasteful number, since it uses less digits than its factorization.

670425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 670425 is about 818.7948461000. The cubic root of 670425 is about 87.5218992806.

The spelling of 670425 in words is "six hundred seventy thousand, four hundred twenty-five".