66701049 has 16 divisors (see below), whose sum is σ = 91059072. Its totient is φ = 43417728.

The previous prime is 66701027. The next prime is 66701051. The reversal of 66701049 is 94010766.

It is a happy number.

It is not a de Polignac number, because 66701049 - 2⁵ = 66701017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66701069) 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, 21079 + ... + 24035.

It is an arithmetic number, because the mean of its divisors is an integer number (5691192).

Almost surely, 2^66701049 is an apocalyptic number.

It is an amenable number.

66701049 is a deficient number, since it is larger than the sum of its proper divisors (24358023).

66701049 is a wasteful number, since it uses less digits than its factorization.

66701049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 66701049 is about 8167.0710172007. The cubic root of 66701049 is about 405.5498278237.

The spelling of 66701049 in words is "sixty-six million, seven hundred one thousand, forty-nine".