64740827 has 8 divisors (see below), whose sum is σ = 65880576. Its totient is φ = 63606312.

The previous prime is 64740821. The next prime is 64740859. The reversal of 64740827 is 72804746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64740827 - 2²² = 60546523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64740821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29978 + ... + 32064.

It is an arithmetic number, because the mean of its divisors is an integer number (8235072).

Almost surely, 2^64740827 is an apocalyptic number.

64740827 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

64740827 is a deficient number, since it is larger than the sum of its proper divisors (1139749).

64740827 is a wasteful number, since it uses less digits than its factorization.

64740827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 64740827 is about 8046.1684670407. The cubic root of 64740827 is about 401.5374724580.

The spelling of 64740827 in words is "sixty-four million, seven hundred forty thousand, eight hundred twenty-seven".