66703087 has 8 divisors (see below), whose sum is σ = 77047632. Its totient is φ = 57072000.

The previous prime is 66703081. The next prime is 66703111. The reversal of 66703087 is 78030766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66703087 - 2⁷ = 66702959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66703081) 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, 178164 + ... + 178537.

It is an arithmetic number, because the mean of its divisors is an integer number (9630954).

Almost surely, 2^66703087 is an apocalyptic number.

66703087 is a deficient number, since it is larger than the sum of its proper divisors (10344545).

66703087 is a wasteful number, since it uses less digits than its factorization.

66703087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356729.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 66703087 is about 8167.1957855803. The cubic root of 66703087 is about 405.5539582042.

The spelling of 66703087 in words is "sixty-six million, seven hundred three thousand, eighty-seven".