70664745 has 8 divisors (see below), whose sum is σ = 113063616. Its totient is φ = 37687856.

The previous prime is 70664731. The next prime is 70664747. The reversal of 70664745 is 54746607.

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 70664745 - 2⁴ = 70664729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70664747) 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, 2355477 + ... + 2355506.

It is an arithmetic number, because the mean of its divisors is an integer number (14132952).

Almost surely, 2^70664745 is an apocalyptic number.

It is an amenable number.

70664745 is a deficient number, since it is larger than the sum of its proper divisors (42398871).

70664745 is a wasteful number, since it uses less digits than its factorization.

70664745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4710991.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 70664745 is about 8406.2325092755. The cubic root of 70664745 is about 413.4289953025.

It can be divided in two parts, 7066 and 4745, that added together give a palindrome (11811).

The spelling of 70664745 in words is "seventy million, six hundred sixty-four thousand, seven hundred forty-five".