397670 has 64 divisors (see below), whose sum is σ = 967680. Its totient is φ = 114048.

The previous prime is 397643. The next prime is 397673. The reversal of 397670 is 76793.

397670 = T₇₁ + T₇₂ + ... + T₁₃₉.

It is a d-powerful number, because it can be written as 3³ + 9 + 6⁷ + 7² + 7⁶ + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397673) by changing a digit.

397670 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17279 + ... + 17301.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2³⁹⁷⁶⁷⁰ is an apocalyptic number.

397670 is an abundant number, since it is smaller than the sum of its proper divisors (570010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397670 is a wasteful number, since it uses less digits than its factorization.

397670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 397670 is about 630.6108150040. The cubic root of 397670 is about 73.5372880661.

The spelling of 397670 in words is "three hundred ninety-seven thousand, six hundred seventy".