66303774 has 24 divisors (see below), whose sum is σ = 152109360. Its totient is φ = 20801088.

The previous prime is 66303751. The next prime is 66303781. The reversal of 66303774 is 47730366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108034 + ... + 108645.

It is an arithmetic number, because the mean of its divisors is an integer number (6337890).

Almost surely, 2^66303774 is an apocalyptic number.

66303774 is an abundant number, since it is smaller than the sum of its proper divisors (85805586).

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

66303774 is a wasteful number, since it uses less digits than its factorization.

66303774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216704 (or 216701 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 66303774 is about 8142.7129385727. The cubic root of 66303774 is about 404.7430651997.

It can be divided in two parts, 6630 and 3774, that added together give a square (10404 = 102²).

The spelling of 66303774 in words is "sixty-six million, three hundred three thousand, seven hundred seventy-four".