149766563 has 4 divisors (see below), whose sum is σ = 153419448. Its totient is φ = 146113680.

The previous prime is 149766553. The next prime is 149766599. The reversal of 149766563 is 365667941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149766563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149766553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1826381 + ... + 1826462.

It is an arithmetic number, because the mean of its divisors is an integer number (38354862).

Almost surely, 2^149766563 is an apocalyptic number.

149766563 is a deficient number, since it is larger than the sum of its proper divisors (3652885).

149766563 is an equidigital number, since it uses as much as digits as its factorization.

149766563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652884.

The product of its digits is 816480, while the sum is 47.

The square root of 149766563 is about 12237.9149776422. The cubic root of 149766563 is about 531.0535150106.

The spelling of 149766563 in words is "one hundred forty-nine million, seven hundred sixty-six thousand, five hundred sixty-three".