66251324 has 6 divisors (see below), whose sum is σ = 115939824. Its totient is φ = 33125660.

The previous prime is 66251299. The next prime is 66251357. The reversal of 66251324 is 42315266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8281412 + ... + 8281419.

It is an arithmetic number, because the mean of its divisors is an integer number (19323304).

Almost surely, 2^66251324 is an apocalyptic number.

It is an amenable number.

66251324 is a deficient number, since it is larger than the sum of its proper divisors (49688500).

66251324 is a wasteful number, since it uses less digits than its factorization.

66251324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16562835 (or 16562833 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 66251324 is about 8139.4916303170. The cubic root of 66251324 is about 404.6363122319.

The spelling of 66251324 in words is "sixty-six million, two hundred fifty-one thousand, three hundred twenty-four".