66612562 has 16 divisors (see below), whose sum is σ = 105948000. Its totient is φ = 31302208.

The previous prime is 66612541. The next prime is 66612569. The reversal of 66612562 is 26521666.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (66612569) 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, 43689 + ... + 45187.

It is an arithmetic number, because the mean of its divisors is an integer number (6621750).

Almost surely, 2^66612562 is an apocalyptic number.

66612562 is a deficient number, since it is larger than the sum of its proper divisors (39335438).

66612562 is a wasteful number, since it uses less digits than its factorization.

66612562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825.

The product of its digits is 25920, while the sum is 34.

The square root of 66612562 is about 8161.6519161258. The cubic root of 66612562 is about 405.3704115134.

The spelling of 66612562 in words is "sixty-six million, six hundred twelve thousand, five hundred sixty-two".