66464705 has 8 divisors (see below), whose sum is σ = 80092800. Its totient is φ = 52948336.

The previous prime is 66464701. The next prime is 66464759. The reversal of 66464705 is 50746466.

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

It is a cyclic number.

It is not a de Polignac number, because 66464705 - 2² = 66464701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66464701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26615 + ... + 29004.

It is an arithmetic number, because the mean of its divisors is an integer number (10011600).

Almost surely, 2^66464705 is an apocalyptic number.

It is an amenable number.

66464705 is a deficient number, since it is larger than the sum of its proper divisors (13628095).

66464705 is a wasteful number, since it uses less digits than its factorization.

66464705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55863.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 66464705 is about 8152.5888526283. The cubic root of 66464705 is about 405.0702616503.

The spelling of 66464705 in words is "sixty-six million, four hundred sixty-four thousand, seven hundred five".