64779552 has 36 divisors (see below), whose sum is σ = 184217670. Its totient is φ = 21593088.

The previous prime is 64779527. The next prime is 64779557. The reversal of 64779552 is 25597746.

64779552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 54819216 + 9960336 = 7404^2 + 3156^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×64779552³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64779498 and 64779507.

It is not an unprimeable number, because it can be changed into a prime (64779557) 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 5 ways as a sum of consecutive naturals, for example, 112177 + ... + 112752.

Almost surely, 2^64779552 is an apocalyptic number.

It is an amenable number.

64779552 is an abundant number, since it is smaller than the sum of its proper divisors (119438118).

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

64779552 is a wasteful number, since it uses less digits than its factorization.

64779552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224945 (or 224934 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 64779552 is about 8048.5745321765. The cubic root of 64779552 is about 401.6175169473.

The spelling of 64779552 in words is "sixty-four million, seven hundred seventy-nine thousand, five hundred fifty-two".