66732992 has 14 divisors (see below), whose sum is σ = 132423408. Its totient is φ = 33366464.

The previous prime is 66732943. The next prime is 66733003. The reversal of 66732992 is 29923766.

66732992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 521288 + ... + 521415.

Almost surely, 2^66732992 is an apocalyptic number.

It is an amenable number.

66732992 is a deficient number, since it is larger than the sum of its proper divisors (65690416).

66732992 is a wasteful number, since it uses less digits than its factorization.

66732992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042715 (or 1042705 counting only the distinct ones).

The product of its digits is 244944, while the sum is 44.

The square root of 66732992 is about 8169.0263801753. The cubic root of 66732992 is about 405.6145564946.

The spelling of 66732992 in words is "sixty-six million, seven hundred thirty-two thousand, nine hundred ninety-two".