64470772 has 6 divisors (see below), whose sum is σ = 112823858. Its totient is φ = 32235384.

The previous prime is 64470767. The next prime is 64470779. The reversal of 64470772 is 27707446.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51322896 + 13147876 = 7164^2 + 3626^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64470779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8058843 + ... + 8058850.

Almost surely, 2^64470772 is an apocalyptic number.

It is an amenable number.

64470772 is a deficient number, since it is larger than the sum of its proper divisors (48353086).

64470772 is a wasteful number, since it uses less digits than its factorization.

64470772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16117697 (or 16117695 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 64470772 is about 8029.3693401163. The cubic root of 64470772 is about 400.9783799804.

The spelling of 64470772 in words is "sixty-four million, four hundred seventy thousand, seven hundred seventy-two".