66901426 has 16 divisors (see below), whose sum is σ = 106414560. Its totient is φ = 31435840.

The previous prime is 66901391. The next prime is 66901481. The reversal of 66901426 is 62410966.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 66901391 and 66901400.

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 7 ways as a sum of consecutive naturals, for example, 33681 + ... + 35611.

It is an arithmetic number, because the mean of its divisors is an integer number (6650910).

Almost surely, 2^66901426 is an apocalyptic number.

66901426 is a deficient number, since it is larger than the sum of its proper divisors (39513134).

66901426 is a wasteful number, since it uses less digits than its factorization.

66901426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 66901426 is about 8179.3291900987. The cubic root of 66901426 is about 405.9555266872.

The spelling of 66901426 in words is "sixty-six million, nine hundred one thousand, four hundred twenty-six".