64243782 has 48 divisors (see below), whose sum is σ = 149509152. Its totient is φ = 19864320.

The previous prime is 64243771. The next prime is 64243793. The reversal of 64243782 is 28734246.

64243782 is a `hidden beast` number, since 642 + 4 + 3 + 7 + 8 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (64243771) and next prime (64243793).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20248 + ... + 23204.

It is an arithmetic number, because the mean of its divisors is an integer number (3114774).

Almost surely, 2^64243782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64243782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74754576).

64243782 is an abundant number, since it is smaller than the sum of its proper divisors (85265370).

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

64243782 is a wasteful number, since it uses less digits than its factorization.

64243782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053 (or 3050 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 64243782 is about 8015.2218933726. The cubic root of 64243782 is about 400.5072356747.

It can be divided in two parts, 64243 and 782, that added together give a square (65025 = 255²).

The spelling of 64243782 in words is "sixty-four million, two hundred forty-three thousand, seven hundred eighty-two".