1566432366 has 8 divisors (see below), whose sum is σ = 3132864744. Its totient is φ = 522144120.

The previous prime is 1566432353. The next prime is 1566432379. The reversal of 1566432366 is 6632346651.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1566432353) and next prime (1566432379).

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

1566432366 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130536025 + ... + 130536036.

It is an arithmetic number, because the mean of its divisors is an integer number (391608093).

Almost surely, 2^1566432366 is an apocalyptic number.

1566432366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1566432366 is a wasteful number, since it uses less digits than its factorization.

1566432366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261072066.

The product of its digits is 466560, while the sum is 42.

The square root of 1566432366 is about 39578.1804281096. The cubic root of 1566432366 is about 1161.3698556267.

The spelling of 1566432366 in words is "one billion, five hundred sixty-six million, four hundred thirty-two thousand, three hundred sixty-six".