66612468 has 48 divisors (see below), whose sum is σ = 168045696. Its totient is φ = 20415360.

The previous prime is 66612457. The next prime is 66612473. The reversal of 66612468 is 86421666.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47830 + ... + 49202.

It is an arithmetic number, because the mean of its divisors is an integer number (3500952).

Almost surely, 2^66612468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66612468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84022848).

66612468 is an abundant number, since it is smaller than the sum of its proper divisors (101433228).

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

66612468 is a wasteful number, since it uses less digits than its factorization.

66612468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704 (or 1702 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 66612468 is about 8161.6461574856. The cubic root of 66612468 is about 405.3702208345.

The spelling of 66612468 in words is "sixty-six million, six hundred twelve thousand, four hundred sixty-eight".