64870534 has 16 divisors (see below), whose sum is σ = 102827520. Its totient is φ = 30630600.

The previous prime is 64870529. The next prime is 64870567. The reversal of 64870534 is 43507846.

It is a junction number, because it is equal to n+sod(n) for n = 64870493 and 64870502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5292 + ... + 12559.

It is an arithmetic number, because the mean of its divisors is an integer number (6426720).

Almost surely, 2^64870534 is an apocalyptic number.

64870534 is a deficient number, since it is larger than the sum of its proper divisors (37956986).

64870534 is a wasteful number, since it uses less digits than its factorization.

64870534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17955.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 64870534 is about 8054.2246057581. The cubic root of 64870534 is about 401.8054511050.

The spelling of 64870534 in words is "sixty-four million, eight hundred seventy thousand, five hundred thirty-four".