64645635 has 8 divisors (see below), whose sum is σ = 103433040. Its totient is φ = 34477664.

The previous prime is 64645631. The next prime is 64645639. The reversal of 64645635 is 53654646.

64645635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64645631) and next prime (64645639).

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 64645635 - 2² = 64645631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64645593 and 64645602.

It is not an unprimeable number, because it can be changed into a prime (64645631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154840 + ... + 2154869.

It is an arithmetic number, because the mean of its divisors is an integer number (12929130).

Almost surely, 2^64645635 is an apocalyptic number.

64645635 is a deficient number, since it is larger than the sum of its proper divisors (38787405).

64645635 is a wasteful number, since it uses less digits than its factorization.

64645635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309717.

The product of its digits is 259200, while the sum is 39.

The square root of 64645635 is about 8040.2509289201. The cubic root of 64645635 is about 401.3405750439.

The spelling of 64645635 in words is "sixty-four million, six hundred forty-five thousand, six hundred thirty-five".