64382787 has 24 divisors (see below), whose sum is σ = 106535520. Its totient is φ = 36702720.

The previous prime is 64382771. The next prime is 64382789. The reversal of 64382787 is 78728346.

It is a happy number.

It is not a de Polignac number, because 64382787 - 2⁴ = 64382771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64382789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33139 + ... + 35027.

It is an arithmetic number, because the mean of its divisors is an integer number (4438980).

Almost surely, 2^64382787 is an apocalyptic number.

64382787 is a deficient number, since it is larger than the sum of its proper divisors (42152733).

64382787 is a wasteful number, since it uses less digits than its factorization.

64382787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443 (or 2440 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 64382787 is about 8023.8885211598. Note that the first 3 decimals coincide. The cubic root of 64382787 is about 400.7958882710.

The spelling of 64382787 in words is "sixty-four million, three hundred eighty-two thousand, seven hundred eighty-seven".