66161524 has 96 divisors (see below), whose sum is σ = 146313216. Its totient is φ = 25745280.

The previous prime is 66161521. The next prime is 66161531. The reversal of 66161524 is 42516166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66161521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 618279 + ... + 618385.

It is an arithmetic number, because the mean of its divisors is an integer number (1524096).

Almost surely, 2^66161524 is an apocalyptic number.

It is an amenable number.

66161524 is an abundant number, since it is smaller than the sum of its proper divisors (80151692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66161524 is a wasteful number, since it uses less digits than its factorization.

66161524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 203 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 66161524 is about 8133.9734447563. The cubic root of 66161524 is about 404.4534088658.

The spelling of 66161524 in words is "sixty-six million, one hundred sixty-one thousand, five hundred twenty-four".