66652398 has 12 divisors (see below), whose sum is σ = 144413568. Its totient is φ = 22217460.

The previous prime is 66652351. The next prime is 66652447. The reversal of 66652398 is 89325666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1851438 + ... + 1851473.

It is an arithmetic number, because the mean of its divisors is an integer number (12034464).

Almost surely, 2^66652398 is an apocalyptic number.

66652398 is an abundant number, since it is smaller than the sum of its proper divisors (77761170).

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

66652398 is a wasteful number, since it uses less digits than its factorization.

66652398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702919 (or 3702916 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 66652398 is about 8164.0919887027. The cubic root of 66652398 is about 405.4512026698.

The spelling of 66652398 in words is "sixty-six million, six hundred fifty-two thousand, three hundred ninety-eight".