66548701 has 4 divisors (see below), whose sum is σ = 66740832. Its totient is φ = 66356572.

The previous prime is 66548687. The next prime is 66548711. The reversal of 66548701 is 10784566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66548701 - 2²³ = 58160093 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 (66548711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95545 + ... + 96238.

It is an arithmetic number, because the mean of its divisors is an integer number (16685208).

Almost surely, 2^66548701 is an apocalyptic number.

It is an amenable number.

66548701 is a deficient number, since it is larger than the sum of its proper divisors (192131).

66548701 is a wasteful number, since it uses less digits than its factorization.

66548701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192130.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 66548701 is about 8157.7387185420. The cubic root of 66548701 is about 405.2408281628.

The spelling of 66548701 in words is "sixty-six million, five hundred forty-eight thousand, seven hundred one".