64540696 has 32 divisors (see below), whose sum is σ = 133393680. Its totient is φ = 29030400.

The previous prime is 64540681. The next prime is 64540699. The reversal of 64540696 is 69604546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64540699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4756 + ... + 12316.

Almost surely, 2^64540696 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 64540696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66696840).

64540696 is an abundant number, since it is smaller than the sum of its proper divisors (68852984).

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

64540696 is a wasteful number, since it uses less digits than its factorization.

64540696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7675 (or 7671 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 64540696 is about 8033.7224248788. The cubic root of 64540696 is about 401.1232925816.

The spelling of 64540696 in words is "sixty-four million, five hundred forty thousand, six hundred ninety-six".