66450766 has 8 divisors (see below), whose sum is σ = 99710784. Its totient is φ = 33213840.

The previous prime is 66450751. The next prime is 66450793. The reversal of 66450766 is 66705466.

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

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, 7906 + ... + 13978.

It is an arithmetic number, because the mean of its divisors is an integer number (12463848).

Almost surely, 2^66450766 is an apocalyptic number.

66450766 is a deficient number, since it is larger than the sum of its proper divisors (33260018).

66450766 is a wasteful number, since it uses less digits than its factorization.

66450766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11546.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 66450766 is about 8151.7339259816. The cubic root of 66450766 is about 405.0419425139.

The spelling of 66450766 in words is "sixty-six million, four hundred fifty thousand, seven hundred sixty-six".