670729471 has 4 divisors (see below), whose sum is σ = 671058232. Its totient is φ = 670400712.

The previous prime is 670729459. The next prime is 670729481. The reversal of 670729471 is 174927076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 670729471 - 2⁵ = 670729439 is a prime.

It is a super-3 number, since 3×670729471³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670729481) 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, 161301 + ... + 165406.

It is an arithmetic number, because the mean of its divisors is an integer number (167764558).

Almost surely, 2^670729471 is an apocalyptic number.

670729471 is a deficient number, since it is larger than the sum of its proper divisors (328761).

670729471 is a wasteful number, since it uses less digits than its factorization.

670729471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328760.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 670729471 is about 25898.4453394407. The cubic root of 670729471 is about 875.3514652282.

The spelling of 670729471 in words is "six hundred seventy million, seven hundred twenty-nine thousand, four hundred seventy-one".