670427 has 8 divisors (see below), whose sum is σ = 708864. Its totient is φ = 632808.

The previous prime is 670409. The next prime is 670447. The reversal of 670427 is 724076.

670427 = 24² + 25² + ... + 126².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 670427 - 2⁶ = 670363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670396 and 670405.

It is not an unprimeable number, because it can be changed into a prime (670447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2228 + ... + 2510.

It is an arithmetic number, because the mean of its divisors is an integer number (88608).

2⁶⁷⁰⁴²⁷ is an apocalyptic number.

670427 is a deficient number, since it is larger than the sum of its proper divisors (38437).

670427 is a wasteful number, since it uses less digits than its factorization.

670427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 670427 is about 818.7960674063. The cubic root of 670427 is about 87.5219863117.

The spelling of 670427 in words is "six hundred seventy thousand, four hundred twenty-seven".