66025408 has 28 divisors (see below), whose sum is σ = 131873752. Its totient is φ = 32797440.

The previous prime is 66025397. The next prime is 66025409. The reversal of 66025408 is 80452066.

It is a self number, because there is not a number n which added to its sum of digits gives 66025408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66025409) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6763 + ... + 13333.

Almost surely, 2^66025408 is an apocalyptic number.

It is an amenable number.

66025408 is a deficient number, since it is larger than the sum of its proper divisors (65848344).

66025408 is a wasteful number, since it uses less digits than its factorization.

66025408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6740 (or 6730 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 66025408 is about 8125.6020084668. The cubic root of 66025408 is about 404.1758539072.

The spelling of 66025408 in words is "sixty-six million, twenty-five thousand, four hundred eight".