670735 has 16 divisors (see below), whose sum is σ = 919296. Its totient is φ = 465408.

The previous prime is 670729. The next prime is 670739. The reversal of 670735 is 537076.

670735 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 670735 - 2³ = 670727 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 (670739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802 + ... + 1408.

It is an arithmetic number, because the mean of its divisors is an integer number (57456).

2⁶⁷⁰⁷³⁵ is an apocalyptic number.

670735 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

670735 is a deficient number, since it is larger than the sum of its proper divisors (248561).

670735 is a wasteful number, since it uses less digits than its factorization.

670735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 670735 is about 818.9841268303. The cubic root of 670735 is about 87.5353870473.

The spelling of 670735 in words is "six hundred seventy thousand, seven hundred thirty-five".