66701054 has 12 divisors (see below), whose sum is σ = 116386704. Its totient is φ = 28586124.

The previous prime is 66701051. The next prime is 66701069. The reversal of 66701054 is 45010766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66701051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340214 + ... + 340409.

It is an arithmetic number, because the mean of its divisors is an integer number (9698892).

Almost surely, 2^66701054 is an apocalyptic number.

66701054 is a deficient number, since it is larger than the sum of its proper divisors (49685650).

66701054 is a wasteful number, since it uses less digits than its factorization.

66701054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680639 (or 680632 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 66701054 is about 8167.0713233080. The cubic root of 66701054 is about 405.5498379572.

The spelling of 66701054 in words is "sixty-six million, seven hundred one thousand, fifty-four".