406197 has 18 divisors (see below), whose sum is σ = 646646. Its totient is φ = 245520.

The previous prime is 406183. The next prime is 406207. The reversal of 406197 is 791604.

406197 = 28³ + 29³ + ... + 38³.

406197 is a `hidden beast` number, since 40 + 619 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 352836 + 53361 = 594^2 + 231^2 .

It is not a de Polignac number, because 406197 - 2¹⁶ = 340661 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 406197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406117) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 903 + ... + 1275.

2⁴⁰⁶¹⁹⁷ is an apocalyptic number.

It is an amenable number.

406197 is a deficient number, since it is larger than the sum of its proper divisors (240449).

406197 is a wasteful number, since it uses less digits than its factorization.

406197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 406197 is about 637.3358612223. The cubic root of 406197 is about 74.0591808052.

The spelling of 406197 in words is "four hundred six thousand, one hundred ninety-seven".