66762993 has 8 divisors (see below), whose sum is σ = 97109856. Its totient is φ = 40462400.

The previous prime is 66762973. The next prime is 66763019. The reversal of 66762993 is 39926766.

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

It is not a de Polignac number, because 66762993 - 2⁶ = 66762929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66762923) 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 7 ways as a sum of consecutive naturals, for example, 1011528 + ... + 1011593.

It is an arithmetic number, because the mean of its divisors is an integer number (12138732).

Almost surely, 2^66762993 is an apocalyptic number.

It is an amenable number.

66762993 is a deficient number, since it is larger than the sum of its proper divisors (30346863).

66762993 is a wasteful number, since it uses less digits than its factorization.

66762993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023135.

The product of its digits is 734832, while the sum is 48.

The square root of 66762993 is about 8170.8624391798. The cubic root of 66762993 is about 405.6753311271.

It can be divided in two parts, 6676 and 2993, that added together give a palindrome (9669).

The spelling of 66762993 in words is "sixty-six million, seven hundred sixty-two thousand, nine hundred ninety-three".