64994724 has 84 divisors (see below), whose sum is σ = 176279040. Its totient is φ = 20936880.

The previous prime is 64994701. The next prime is 64994729. The reversal of 64994724 is 42749946.

It is a self number, because there is not a number n which added to its sum of digits gives 64994724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64994729) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 90037 + ... + 90755.

It is an arithmetic number, because the mean of its divisors is an integer number (2098560).

Almost surely, 2^64994724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64994724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88139520).

64994724 is an abundant number, since it is smaller than the sum of its proper divisors (111284316).

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

64994724 is a wasteful number, since it uses less digits than its factorization.

64994724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 755 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 64994724 is about 8061.9305380287. The cubic root of 64994724 is about 402.0616969240.

The spelling of 64994724 in words is "sixty-four million, nine hundred ninety-four thousand, seven hundred twenty-four".