66254370 has 96 divisors (see below), whose sum is σ = 199257408. Its totient is φ = 13974912.

The previous prime is 66254341. The next prime is 66254407. The reversal of 66254370 is 7345266.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17377 + ... + 20843.

It is an arithmetic number, because the mean of its divisors is an integer number (2075598).

Almost surely, 2^66254370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66254370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99628704).

66254370 is an abundant number, since it is smaller than the sum of its proper divisors (133003038).

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

66254370 is a wasteful number, since it uses less digits than its factorization.

66254370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3497 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 66254370 is about 8139.6787405892. The cubic root of 66254370 is about 404.6425133825.

The spelling of 66254370 in words is "sixty-six million, two hundred fifty-four thousand, three hundred seventy".