64943696 has 10 divisors (see below), whose sum is σ = 125828442. Its totient is φ = 32471840.

The previous prime is 64943693. The next prime is 64943759. The reversal of 64943696 is 69634946.

It can be written as a sum of positive squares in only one way, i.e., 58369600 + 6574096 = 7640^2 + 2564^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64943696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64943693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2029475 + ... + 2029506.

Almost surely, 2^64943696 is an apocalyptic number.

It is an amenable number.

64943696 is a deficient number, since it is larger than the sum of its proper divisors (60884746).

64943696 is a wasteful number, since it uses less digits than its factorization.

64943696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058989 (or 4058983 counting only the distinct ones).

The product of its digits is 839808, while the sum is 47.

The square root of 64943696 is about 8058.7651659544. The cubic root of 64943696 is about 401.9564485050.

The spelling of 64943696 in words is "sixty-four million, nine hundred forty-three thousand, six hundred ninety-six".