66350428 has 6 divisors (see below), whose sum is σ = 116113256. Its totient is φ = 33175212.

The previous prime is 66350411. The next prime is 66350477. The reversal of 66350428 is 82405366.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66350393 and 66350402.

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, 8293800 + ... + 8293807.

Almost surely, 2^66350428 is an apocalyptic number.

It is an amenable number.

66350428 is a deficient number, since it is larger than the sum of its proper divisors (49762828).

66350428 is a wasteful number, since it uses less digits than its factorization.

66350428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16587611 (or 16587609 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 66350428 is about 8145.5772048394. The cubic root of 66350428 is about 404.8379741048.

The spelling of 66350428 in words is "sixty-six million, three hundred fifty thousand, four hundred twenty-eight".