1205506461 has 8 divisors (see below), whose sum is σ = 1633692064. Its totient is φ = 790495920.

The previous prime is 1205506457. The next prime is 1205506483. The reversal of 1205506461 is 1646055021.

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

It is not a de Polignac number, because 1205506461 - 2² = 1205506457 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 (1205506961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3293551 + ... + 3293916.

It is an arithmetic number, because the mean of its divisors is an integer number (204211508).

Almost surely, 2^1205506461 is an apocalyptic number.

It is an amenable number.

1205506461 is a deficient number, since it is larger than the sum of its proper divisors (428185603).

1205506461 is an equidigital number, since it uses as much as digits as its factorization.

1205506461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6587531.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1205506461 is about 34720.4041019110. The cubic root of 1205506461 is about 1064.2815026381.

The spelling of 1205506461 in words is "one billion, two hundred five million, five hundred six thousand, four hundred sixty-one".