66352398 has 16 divisors (see below), whose sum is σ = 151662720. Its totient is φ = 18957816.

The previous prime is 66352339. The next prime is 66352409. The reversal of 66352398 is 89325366.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1579819 = 66352398 / (6 + 6 + 3 + 5 + 2 + 3 + 9 + 8).

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, 789868 + ... + 789951.

It is an arithmetic number, because the mean of its divisors is an integer number (9478920).

Almost surely, 2^66352398 is an apocalyptic number.

66352398 is an abundant number, since it is smaller than the sum of its proper divisors (85310322).

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

66352398 is a wasteful number, since it uses less digits than its factorization.

66352398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579831.

The product of its digits is 233280, while the sum is 42.

The square root of 66352398 is about 8145.6981284602. The cubic root of 66352398 is about 404.8419807251.

The spelling of 66352398 in words is "sixty-six million, three hundred fifty-two thousand, three hundred ninety-eight".