64345155 has 16 divisors (see below), whose sum is σ = 117659904. Its totient is φ = 29414880.

The previous prime is 64345139. The next prime is 64345159. The reversal of 64345155 is 55154346.

It is not a de Polignac number, because 64345155 - 2⁴ = 64345139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64345159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306301 + ... + 306510.

It is an arithmetic number, because the mean of its divisors is an integer number (7353744).

Almost surely, 2^64345155 is an apocalyptic number.

64345155 is a deficient number, since it is larger than the sum of its proper divisors (53314749).

64345155 is a wasteful number, since it uses less digits than its factorization.

64345155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612826.

The product of its digits is 36000, while the sum is 33.

The square root of 64345155 is about 8021.5431807103. The cubic root of 64345155 is about 400.7177841111.

The spelling of 64345155 in words is "sixty-four million, three hundred forty-five thousand, one hundred fifty-five".