64993494 has 8 divisors (see below), whose sum is σ = 129987000. Its totient is φ = 21664496.

The previous prime is 64993477. The next prime is 64993519. The reversal of 64993494 is 49439946.

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

64993494 is an admirable number.

It is a congruent number.

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, 5416119 + ... + 5416130.

It is an arithmetic number, because the mean of its divisors is an integer number (16248375).

Almost surely, 2^64993494 is an apocalyptic number.

64993494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64993494 is a wasteful number, since it uses less digits than its factorization.

64993494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10832254.

The product of its digits is 839808, while the sum is 48.

The square root of 64993494 is about 8061.8542532100. The cubic root of 64993494 is about 402.0591606206.

It can be divided in two parts, 649 and 93494, that multiplied together give a palindrome (60677606).

The spelling of 64993494 in words is "sixty-four million, nine hundred ninety-three thousand, four hundred ninety-four".