64045646 has 32 divisors (see below), whose sum is σ = 113400000. Its totient is φ = 27113856.

The previous prime is 64045609. The next prime is 64045651. The reversal of 64045646 is 64654046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60530 + ... + 61578.

It is an arithmetic number, because the mean of its divisors is an integer number (3543750).

Almost surely, 2^64045646 is an apocalyptic number.

64045646 is a deficient number, since it is larger than the sum of its proper divisors (49354354).

64045646 is a wasteful number, since it uses less digits than its factorization.

64045646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1147 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 64045646 is about 8002.8523665003. The cubic root of 64045646 is about 400.0950732342.

Subtracting 64045646 from its reverse (64654046), we obtain a square (608400 = 780²).

The spelling of 64045646 in words is "sixty-four million, forty-five thousand, six hundred forty-six".