670609447 has 4 divisors (see below), whose sum is σ = 670671576. Its totient is φ = 670547320.

The previous prime is 670609411. The next prime is 670609469. The reversal of 670609447 is 744906076.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 670609447 - 2²⁷ = 536391719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670609847) 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, 10204 + ... + 38017.

It is an arithmetic number, because the mean of its divisors is an integer number (167667894).

Almost surely, 2^670609447 is an apocalyptic number.

670609447 is a deficient number, since it is larger than the sum of its proper divisors (62129).

670609447 is a wasteful number, since it uses less digits than its factorization.

670609447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62128.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 670609447 is about 25896.1280310397. The cubic root of 670609447 is about 875.2992487205.

The spelling of 670609447 in words is "six hundred seventy million, six hundred nine thousand, four hundred forty-seven".