670647425 has 24 divisors (see below), whose sum is σ = 968348736. Its totient is φ = 451189440.

The previous prime is 670647391. The next prime is 670647449. The reversal of 670647425 is 524746076.

It is not a de Polignac number, because 670647425 - 2⁸ = 670647169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26879 + ... + 45428.

It is an arithmetic number, because the mean of its divisors is an integer number (40347864).

Almost surely, 2^670647425 is an apocalyptic number.

It is an amenable number.

670647425 is a deficient number, since it is larger than the sum of its proper divisors (297701311).

670647425 is a wasteful number, since it uses less digits than its factorization.

670647425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72377 (or 72372 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

The square root of 670647425 is about 25896.8612963038. The cubic root of 670647425 is about 875.3157717442.

The spelling of 670647425 in words is "six hundred seventy million, six hundred forty-seven thousand, four hundred twenty-five".