66426526 has 8 divisors (see below), whose sum is σ = 99727704. Its totient is φ = 33183960.

The previous prime is 66426491. The next prime is 66426551. The reversal of 66426526 is 62562466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11700 + ... + 16423.

It is an arithmetic number, because the mean of its divisors is an integer number (12465963).

Almost surely, 2^66426526 is an apocalyptic number.

66426526 is a deficient number, since it is larger than the sum of its proper divisors (33301178).

66426526 is a wasteful number, since it uses less digits than its factorization.

66426526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29306.

The product of its digits is 103680, while the sum is 37.

The square root of 66426526 is about 8150.2469901224. The cubic root of 66426526 is about 404.9926859422.

The spelling of 66426526 in words is "sixty-six million, four hundred twenty-six thousand, five hundred twenty-six".