66451352 has 32 divisors (see below), whose sum is σ = 140313600. Its totient is φ = 29229600.

The previous prime is 66451309. The next prime is 66451361. The reversal of 66451352 is 25315466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9452 + ... + 14907.

It is an arithmetic number, because the mean of its divisors is an integer number (4384800).

Almost surely, 2^66451352 is an apocalyptic number.

66451352 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66451352 is an abundant number, since it is smaller than the sum of its proper divisors (73862248).

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

66451352 is a wasteful number, since it uses less digits than its factorization.

66451352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24407 (or 24403 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 66451352 is about 8151.7698691757. The cubic root of 66451352 is about 405.0431331392.

It can be divided in two parts, 6645 and 1352, that added together give a palindrome (7997).

The spelling of 66451352 in words is "sixty-six million, four hundred fifty-one thousand, three hundred fifty-two".