66773488 has 10 divisors (see below), whose sum is σ = 129373664. Its totient is φ = 33386736.

The previous prime is 66773479. The next prime is 66773491. The reversal of 66773488 is 88437766.

It is a super-2 number, since 2×66773488² = 8917397399372288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2086656 + ... + 2086687.

Almost surely, 2^66773488 is an apocalyptic number.

It is an amenable number.

66773488 is a deficient number, since it is larger than the sum of its proper divisors (62600176).

66773488 is a wasteful number, since it uses less digits than its factorization.

66773488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173351 (or 4173345 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 49.

The square root of 66773488 is about 8171.5046350106. The cubic root of 66773488 is about 405.6965871121.

The spelling of 66773488 in words is "sixty-six million, seven hundred seventy-three thousand, four hundred eighty-eight".