66426498 has 12 divisors (see below), whose sum is σ = 143924118. Its totient is φ = 22142160.

The previous prime is 66426491. The next prime is 66426551. The reversal of 66426498 is 89462466.

It can be written as a sum of positive squares in only one way, i.e., 56295009 + 10131489 = 7503^2 + 3183^2 .

It is not an unprimeable number, because it can be changed into a prime (66426491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1845163 + ... + 1845198.

Almost surely, 2^66426498 is an apocalyptic number.

66426498 is an abundant number, since it is smaller than the sum of its proper divisors (77497620).

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

66426498 is a wasteful number, since it uses less digits than its factorization.

66426498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690369 (or 3690366 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 66426498 is about 8150.2452723829. The cubic root of 66426498 is about 404.9926290382.

The spelling of 66426498 in words is "sixty-six million, four hundred twenty-six thousand, four hundred ninety-eight".