64772642 has 8 divisors (see below), whose sum is σ = 105991632. Its totient is φ = 29442100.

The previous prime is 64772633. The next prime is 64772647. The reversal of 64772642 is 24627746.

64772642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 64772596 and 64772605.

It is not an unprimeable number, because it can be changed into a prime (64772647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472084 + ... + 1472127.

It is an arithmetic number, because the mean of its divisors is an integer number (13248954).

Almost surely, 2^64772642 is an apocalyptic number.

64772642 is a deficient number, since it is larger than the sum of its proper divisors (41218990).

64772642 is a wasteful number, since it uses less digits than its factorization.

64772642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944224.

The product of its digits is 112896, while the sum is 38.

The square root of 64772642 is about 8048.1452521684. The cubic root of 64772642 is about 401.6032363313.

Subtracting from 64772642 its reverse (24627746), we obtain a square (40144896 = 6336²).

It can be divided in two parts, 6477 and 2642, that added together give a palindrome (9119).

The spelling of 64772642 in words is "sixty-four million, seven hundred seventy-two thousand, six hundred forty-two".