64531435 has 4 divisors (see below), whose sum is σ = 77437728. Its totient is φ = 51625144.

The previous prime is 64531361. The next prime is 64531471. The reversal of 64531435 is 53413546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53413546 = 2 ⋅26706773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64531435 is a prime.

It is a super-2 number, since 2×64531435² = 8328612206318450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64531397 and 64531406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6453139 + ... + 6453148.

It is an arithmetic number, because the mean of its divisors is an integer number (19359432).

Almost surely, 2^64531435 is an apocalyptic number.

64531435 is a deficient number, since it is larger than the sum of its proper divisors (12906293).

64531435 is a wasteful number, since it uses less digits than its factorization.

64531435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12906292.

The product of its digits is 21600, while the sum is 31.

The square root of 64531435 is about 8033.1460213294. The cubic root of 64531435 is about 401.1041058218.

The spelling of 64531435 in words is "sixty-four million, five hundred thirty-one thousand, four hundred thirty-five".