66472254 has 48 divisors (see below), whose sum is σ = 151062912. Its totient is φ = 21084624.

The previous prime is 66472253. The next prime is 66472271. The reversal of 66472254 is 45227466.

66472254 is a `hidden beast` number, since 6 + 647 + 2 + 2 + 5 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66472253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126837 + ... + 127359.

It is an arithmetic number, because the mean of its divisors is an integer number (3147144).

Almost surely, 2^66472254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66472254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75531456).

66472254 is an abundant number, since it is smaller than the sum of its proper divisors (84590658).

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

66472254 is a wasteful number, since it uses less digits than its factorization.

66472254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 858 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 66472254 is about 8153.0518212507. The cubic root of 66472254 is about 405.0855969055.

The spelling of 66472254 in words is "sixty-six million, four hundred seventy-two thousand, two hundred fifty-four".