1566346461 has 8 divisors (see below), whose sum is σ = 2097426240. Its totient is φ = 1039748832.

The previous prime is 1566346451. The next prime is 1566346469. The reversal of 1566346461 is 1646436651.

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

It is not a de Polignac number, because 1566346461 - 2¹⁰ = 1566345437 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566346469) 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, 1119721 + ... + 1121118.

It is an arithmetic number, because the mean of its divisors is an integer number (262178280).

Almost surely, 2^1566346461 is an apocalyptic number.

It is an amenable number.

1566346461 is a deficient number, since it is larger than the sum of its proper divisors (531079779).

1566346461 is a wasteful number, since it uses less digits than its factorization.

1566346461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241075.

The product of its digits is 311040, while the sum is 42.

The square root of 1566346461 is about 39577.0951561632. The cubic root of 1566346461 is about 1161.3486249407.

The spelling of 1566346461 in words is "one billion, five hundred sixty-six million, three hundred forty-six thousand, four hundred sixty-one".