66313534 has 24 divisors (see below), whose sum is σ = 119987568. Its totient is φ = 26922240.

The previous prime is 66313501. The next prime is 66313537. The reversal of 66313534 is 43531366.

It is a junction number, because it is equal to n+sod(n) for n = 66313496 and 66313505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66313537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1507 + ... + 11614.

It is an arithmetic number, because the mean of its divisors is an integer number (4999482).

Almost surely, 2^66313534 is an apocalyptic number.

66313534 is a deficient number, since it is larger than the sum of its proper divisors (53674034).

66313534 is a wasteful number, since it uses less digits than its factorization.

66313534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13168 (or 13149 counting only the distinct ones).

The product of its digits is 19440, while the sum is 31.

The square root of 66313534 is about 8143.3122253786. The cubic root of 66313534 is about 404.7629237903.

It can be divided in two parts, 66 and 313534, that added together give a square (313600 = 560²).

The spelling of 66313534 in words is "sixty-six million, three hundred thirteen thousand, five hundred thirty-four".