1206215461 has 8 divisors (see below), whose sum is σ = 1318915584. Its totient is φ = 1094022720.

The previous prime is 1206215459. The next prime is 1206215477. The reversal of 1206215461 is 1645126021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1206215461 - 2¹ = 1206215459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206215561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121861 + ... + 131386.

It is an arithmetic number, because the mean of its divisors is an integer number (164864448).

Almost surely, 2^1206215461 is an apocalyptic number.

1206215461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1206215461 is a deficient number, since it is larger than the sum of its proper divisors (112700123).

1206215461 is a wasteful number, since it uses less digits than its factorization.

1206215461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253691.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1206215461 is about 34730.6127357408. The cubic root of 1206215461 is about 1064.4901086548.

The spelling of 1206215461 in words is "one billion, two hundred six million, two hundred fifteen thousand, four hundred sixty-one".