72332663 has 4 divisors (see below), whose sum is σ = 77896728. Its totient is φ = 66768600.

The previous prime is 72332657. The next prime is 72332683. The reversal of 72332663 is 36623327.

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

It is a cyclic number.

It is not a de Polignac number, because 72332663 - 2¹² = 72328567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72332683) 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 3 ways as a sum of consecutive naturals, for example, 2782013 + ... + 2782038.

It is an arithmetic number, because the mean of its divisors is an integer number (19474182).

Almost surely, 2^72332663 is an apocalyptic number.

72332663 is a deficient number, since it is larger than the sum of its proper divisors (5564065).

72332663 is a wasteful number, since it uses less digits than its factorization.

72332663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564064.

The product of its digits is 27216, while the sum is 32.

The square root of 72332663 is about 8504.8611393720. The cubic root of 72332663 is about 416.6564904892.

The spelling of 72332663 in words is "seventy-two million, three hundred thirty-two thousand, six hundred sixty-three".