397306 has 32 divisors (see below), whose sum is σ = 766080. Its totient is φ = 150336.

The previous prime is 397303. The next prime is 397337. The reversal of 397306 is 603793.

It is a super-3 number, since 3×397306³ = 188146708833385848, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (397301) 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, 6705 + ... + 6763.

It is an arithmetic number, because the mean of its divisors is an integer number (23940).

2³⁹⁷³⁰⁶ is an apocalyptic number.

397306 is a deficient number, since it is larger than the sum of its proper divisors (368774).

397306 is a wasteful number, since it uses less digits than its factorization.

397306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 397306 is about 630.3221398618. The cubic root of 397306 is about 73.5148442106.

It can be divided in two parts, 397 and 306, that added together give a triangular number (703 = T₃₇).

The spelling of 397306 in words is "three hundred ninety-seven thousand, three hundred six".