64985530 has 8 divisors (see below), whose sum is σ = 116973972. Its totient is φ = 25994208.

The previous prime is 64985497. The next prime is 64985551. The reversal of 64985530 is 3558946.

It can be written as a sum of positive squares in 2 ways, for example, as 59182249 + 5803281 = 7693^2 + 2409^2 .

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

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, 3249267 + ... + 3249286.

Almost surely, 2^64985530 is an apocalyptic number.

64985530 is a deficient number, since it is larger than the sum of its proper divisors (51988442).

64985530 is a wasteful number, since it uses less digits than its factorization.

64985530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6498560.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 64985530 is about 8061.3603070450. The cubic root of 64985530 is about 402.0427377976.

The spelling of 64985530 in words is "sixty-four million, nine hundred eighty-five thousand, five hundred thirty".