640524062 has 8 divisors (see below), whose sum is σ = 1017302976. Its totient is φ = 301423072.

The previous prime is 640524061. The next prime is 640524083. The reversal of 640524062 is 260425046.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640524061) by changing a digit.

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, 9419438 + ... + 9419505.

It is an arithmetic number, because the mean of its divisors is an integer number (127162872).

Almost surely, 2^640524062 is an apocalyptic number.

640524062 is a deficient number, since it is larger than the sum of its proper divisors (376778914).

640524062 is a wasteful number, since it uses less digits than its factorization.

640524062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18838962.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 640524062 is about 25308.5768465949. The cubic root of 640524062 is about 862.0090321206.

The spelling of 640524062 in words is "six hundred forty million, five hundred twenty-four thousand, sixty-two".