64434635 has 4 divisors (see below), whose sum is σ = 77321568. Its totient is φ = 51547704.

The previous prime is 64434619. The next prime is 64434659. The reversal of 64434635 is 53643446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64434635 - 2⁴ = 64434619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64434595 and 64434604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6443459 + ... + 6443468.

It is an arithmetic number, because the mean of its divisors is an integer number (19330392).

Almost surely, 2^64434635 is an apocalyptic number.

64434635 is a deficient number, since it is larger than the sum of its proper divisors (12886933).

64434635 is a wasteful number, since it uses less digits than its factorization.

64434635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12886932.

The product of its digits is 103680, while the sum is 35.

The square root of 64434635 is about 8027.1187234275. The cubic root of 64434635 is about 400.9034475036.

The spelling of 64434635 in words is "sixty-four million, four hundred thirty-four thousand, six hundred thirty-five".