66704700 has 36 divisors (see below), whose sum is σ = 192999800. Its totient is φ = 17787840.

The previous prime is 66704689. The next prime is 66704749. The reversal of 66704700 is 740766.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 110875 + ... + 111474.

Almost surely, 2^66704700 is an apocalyptic number.

66704700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66704700 is an abundant number, since it is smaller than the sum of its proper divisors (126295100).

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

66704700 is a wasteful number, since it uses less digits than its factorization.

66704700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222366 (or 222359 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 66704700 is about 8167.2945336874. The cubic root of 66704700 is about 405.5572271846.

The spelling of 66704700 in words is "sixty-six million, seven hundred four thousand, seven hundred".