64070665 has 8 divisors (see below), whose sum is σ = 77133888. Its totient is φ = 51090480.

The previous prime is 64070651. The next prime is 64070687. The reversal of 64070665 is 56607046.

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

It is a de Polignac number, because none of the positive numbers 2^k-64070665 is a prime.

It is a super-2 number, since 2×64070665² = 8210100227084450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64070665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19047 + ... + 22156.

It is an arithmetic number, because the mean of its divisors is an integer number (9641736).

Almost surely, 2^64070665 is an apocalyptic number.

It is an amenable number.

64070665 is a deficient number, since it is larger than the sum of its proper divisors (13063223).

64070665 is a wasteful number, since it uses less digits than its factorization.

64070665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41519.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 64070665 is about 8004.4153440461. The cubic root of 64070665 is about 400.1471645998.

The spelling of 64070665 in words is "sixty-four million, seventy thousand, six hundred sixty-five".