64806740 has 24 divisors (see below), whose sum is σ = 140485632. Its totient is φ = 25086240.

The previous prime is 64806697. The next prime is 64806799. The reversal of 64806740 is 4760846.

It is a self number, because there is not a number n which added to its sum of digits gives 64806740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51644 + ... + 52883.

It is an arithmetic number, because the mean of its divisors is an integer number (5853568).

Almost surely, 2^64806740 is an apocalyptic number.

It is an amenable number.

64806740 is an abundant number, since it is smaller than the sum of its proper divisors (75678892).

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

64806740 is a wasteful number, since it uses less digits than its factorization.

64806740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104567 (or 104565 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 64806740 is about 8050.2633497296. The cubic root of 64806740 is about 401.6736954248.

The spelling of 64806740 in words is "sixty-four million, eight hundred six thousand, seven hundred forty".