66534070 has 16 divisors (see below), whose sum is σ = 120456720. Its totient is φ = 26459104.

The previous prime is 66534059. The next prime is 66534077. The reversal of 66534070 is 7043566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66534077) 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, 17500 + ... + 20959.

It is an arithmetic number, because the mean of its divisors is an integer number (7528545).

Almost surely, 2^66534070 is an apocalyptic number.

66534070 is a deficient number, since it is larger than the sum of its proper divisors (53922650).

66534070 is a wasteful number, since it uses less digits than its factorization.

66534070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38639.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 66534070 is about 8156.8419133878. The cubic root of 66534070 is about 405.2111280433.

The spelling of 66534070 in words is "sixty-six million, five hundred thirty-four thousand, seventy".