66266764 has 6 divisors (see below), whose sum is σ = 115966844. Its totient is φ = 33133380.

The previous prime is 66266723. The next prime is 66266773. The reversal of 66266764 is 46766266.

It is a super-2 number, since 2×66266764² = 8782568022063392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66266764.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8283342 + ... + 8283349.

Almost surely, 2^66266764 is an apocalyptic number.

It is an amenable number.

66266764 is a deficient number, since it is larger than the sum of its proper divisors (49700080).

66266764 is a wasteful number, since it uses less digits than its factorization.

66266764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16566695 (or 16566693 counting only the distinct ones).

The product of its digits is 435456, while the sum is 43.

The square root of 66266764 is about 8140.4400372461. The cubic root of 66266764 is about 404.6677435504.

The spelling of 66266764 in words is "sixty-six million, two hundred sixty-six thousand, seven hundred sixty-four".