64430155 has 16 divisors (see below), whose sum is σ = 78360480. Its totient is φ = 50853888.

The previous prime is 64430137. The next prime is 64430167. The reversal of 64430155 is 55103446.

64430155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 64430155 - 2¹⁵ = 64397387 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 172549 + ... + 172921.

It is an arithmetic number, because the mean of its divisors is an integer number (4897530).

Almost surely, 2^64430155 is an apocalyptic number.

64430155 is a deficient number, since it is larger than the sum of its proper divisors (13930325).

64430155 is a wasteful number, since it uses less digits than its factorization.

64430155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 64430155 is about 8026.8396645255. The cubic root of 64430155 is about 400.8941559734.

The spelling of 64430155 in words is "sixty-four million, four hundred thirty thousand, one hundred fifty-five".