66154060 has 48 divisors (see below), whose sum is σ = 160969536. Its totient is φ = 22367232.

The previous prime is 66154027. The next prime is 66154061. The reversal of 66154060 is 6045166.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (66154061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6984 + ... + 13456.

It is an arithmetic number, because the mean of its divisors is an integer number (3353532).

Almost surely, 2^66154060 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 66154060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80484768).

66154060 is an abundant number, since it is smaller than the sum of its proper divisors (94815476).

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

66154060 is a wasteful number, since it uses less digits than its factorization.

66154060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562 (or 6560 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66154060 is about 8133.5146154661. The cubic root of 66154060 is about 404.4381988485.

The spelling of 66154060 in words is "sixty-six million, one hundred fifty-four thousand, sixty".