206472401 has 4 divisors (see below), whose sum is σ = 206606400. Its totient is φ = 206338404.

The previous prime is 206472391. The next prime is 206472419. The reversal of 206472401 is 104274602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104274602 = 2 ⋅52137301.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206472401 is a prime.

It is a super-3 number, since 3×206472401³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206472451) 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, 64661 + ... + 67778.

It is an arithmetic number, because the mean of its divisors is an integer number (51651600).

Almost surely, 2^206472401 is an apocalyptic number.

It is an amenable number.

206472401 is a deficient number, since it is larger than the sum of its proper divisors (133999).

206472401 is a wasteful number, since it uses less digits than its factorization.

206472401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133998.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 206472401 is about 14369.1475390853. The cubic root of 206472401 is about 591.0451655287.

The spelling of 206472401 in words is "two hundred six million, four hundred seventy-two thousand, four hundred one".