66135763 has 8 divisors (see below), whose sum is σ = 71655408. Its totient is φ = 60797184.

The previous prime is 66135749. The next prime is 66135793. The reversal of 66135763 is 36753166.

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

It is a de Polignac number, because none of the positive numbers 2^k-66135763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66135703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44506 + ... + 45967.

It is an arithmetic number, because the mean of its divisors is an integer number (8956926).

Almost surely, 2^66135763 is an apocalyptic number.

66135763 is a deficient number, since it is larger than the sum of its proper divisors (5519645).

66135763 is a wasteful number, since it uses less digits than its factorization.

66135763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90533.

The product of its digits is 68040, while the sum is 37.

The square root of 66135763 is about 8132.3897471776. The cubic root of 66135763 is about 404.4009086803.

The spelling of 66135763 in words is "sixty-six million, one hundred thirty-five thousand, seven hundred sixty-three".