66670534 has 16 divisors (see below), whose sum is σ = 116725248. Its totient is φ = 27964872.

The previous prime is 66670529. The next prime is 66670547. The reversal of 66670534 is 43507666.

It is a junction number, because it is equal to n+sod(n) for n = 66670493 and 66670502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50004 + ... + 51319.

It is an arithmetic number, because the mean of its divisors is an integer number (7295328).

Almost surely, 2^66670534 is an apocalyptic number.

66670534 is a deficient number, since it is larger than the sum of its proper divisors (50054714).

66670534 is a wasteful number, since it uses less digits than its factorization.

66670534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101379.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 66670534 is about 8165.2026306761. The cubic root of 66670534 is about 405.4879735208.

It can be divided in two parts, 66 and 670534, that multiplied together give a palindrome (44255244).

The spelling of 66670534 in words is "sixty-six million, six hundred seventy thousand, five hundred thirty-four".