64727340 has 24 divisors (see below), whose sum is σ = 181236720. Its totient is φ = 17260608.

The previous prime is 64727329. The next prime is 64727353. The reversal of 64727340 is 4372746.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539335 + ... + 539454.

It is an arithmetic number, because the mean of its divisors is an integer number (7551530).

Almost surely, 2^64727340 is an apocalyptic number.

64727340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64727340 is an abundant number, since it is smaller than the sum of its proper divisors (116509380).

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

64727340 is a wasteful number, since it uses less digits than its factorization.

64727340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078801 (or 1078799 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 64727340 is about 8045.3303226157. The cubic root of 64727340 is about 401.5095873647.

The spelling of 64727340 in words is "sixty-four million, seven hundred twenty-seven thousand, three hundred forty".