66803480 has 32 divisors (see below), whose sum is σ = 151154640. Its totient is φ = 26570880.

The previous prime is 66803447. The next prime is 66803483. The reversal of 66803480 is 8430866.

It is a super-2 number, since 2×66803480² = 8925409880220800, 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 66803480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66803483) 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, 2627 + ... + 11853.

Almost surely, 2^66803480 is an apocalyptic number.

It is an amenable number.

66803480 is an abundant number, since it is smaller than the sum of its proper divisors (84351160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66803480 is a wasteful number, since it uses less digits than its factorization.

66803480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9419 (or 9415 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 66803480 is about 8173.3395867295. The cubic root of 66803480 is about 405.7573189540.

The spelling of 66803480 in words is "sixty-six million, eight hundred three thousand, four hundred eighty".