66549087 has 16 divisors (see below), whose sum is σ = 107554560. Its totient is φ = 40332600.

The previous prime is 66549073. The next prime is 66549089. The reversal of 66549087 is 78094566.

It is not a de Polignac number, because 66549087 - 2⁴ = 66549071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66549089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111739 + ... + 112332.

It is an arithmetic number, because the mean of its divisors is an integer number (6722160).

Almost surely, 2^66549087 is an apocalyptic number.

66549087 is a deficient number, since it is larger than the sum of its proper divisors (41005473).

66549087 is a wasteful number, since it uses less digits than its factorization.

66549087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224091 (or 224085 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 66549087 is about 8157.7623770247. The cubic root of 66549087 is about 405.2416116625.

The spelling of 66549087 in words is "sixty-six million, five hundred forty-nine thousand, eighty-seven".