66799552 has 14 divisors (see below), whose sum is σ = 132555488. Its totient is φ = 33399744.

The previous prime is 66799547. The next prime is 66799559. The reversal of 66799552 is 25599766.

It is a junction number, because it is equal to n+sod(n) for n = 66799496 and 66799505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66799559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521808 + ... + 521935.

Almost surely, 2^66799552 is an apocalyptic number.

It is an amenable number.

66799552 is a deficient number, since it is larger than the sum of its proper divisors (65755936).

66799552 is a wasteful number, since it uses less digits than its factorization.

66799552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043755 (or 1043745 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 49.

The square root of 66799552 is about 8173.0992897432. The cubic root of 66799552 is about 405.7493660450.

The spelling of 66799552 in words is "sixty-six million, seven hundred ninety-nine thousand, five hundred fifty-two".