671435 has 4 divisors (see below), whose sum is σ = 805728. Its totient is φ = 537144.

The previous prime is 671431. The next prime is 671443. The reversal of 671435 is 534176.

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 671435 - 2² = 671431 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671435.

It is not an unprimeable number, because it can be changed into a prime (671431) 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, 67139 + ... + 67148.

It is an arithmetic number, because the mean of its divisors is an integer number (201432).

2⁶⁷¹⁴³⁵ is an apocalyptic number.

671435 is a deficient number, since it is larger than the sum of its proper divisors (134293).

671435 is a wasteful number, since it uses less digits than its factorization.

671435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134292.

The product of its digits is 2520, while the sum is 26.

The square root of 671435 is about 819.4113740973. The cubic root of 671435 is about 87.5658280149.

The spelling of 671435 in words is "six hundred seventy-one thousand, four hundred thirty-five".