1206417 has 4 divisors (see below), whose sum is σ = 1608560. Its totient is φ = 804276.

The previous prime is 1206407. The next prime is 1206433. The reversal of 1206417 is 7146021.

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.

It is not a de Polignac number, because 1206417 - 2⁶ = 1206353 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1206393 and 1206402.

It is not an unprimeable number, because it can be changed into a prime (1206407) 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, 201067 + ... + 201072.

It is an arithmetic number, because the mean of its divisors is an integer number (402140).

2^1206417 is an apocalyptic number.

It is an amenable number.

1206417 is a deficient number, since it is larger than the sum of its proper divisors (402143).

1206417 is an equidigital number, since it uses as much as digits as its factorization.

1206417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402142.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1206417 is about 1098.3701561860. The cubic root of 1206417 is about 106.4549391686.

The spelling of 1206417 in words is "one million, two hundred six thousand, four hundred seventeen".