64155147 has 16 divisors (see below), whose sum is σ = 98330880. Its totient is φ = 36446112.

The previous prime is 64155137. The next prime is 64155173. The reversal of 64155147 is 74155146.

It is not a de Polignac number, because 64155147 - 2⁴ = 64155131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64155107) 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, 5197 + ... + 12462.

It is an arithmetic number, because the mean of its divisors is an integer number (6145680).

Almost surely, 2^64155147 is an apocalyptic number.

64155147 is a deficient number, since it is larger than the sum of its proper divisors (34175733).

64155147 is a wasteful number, since it uses less digits than its factorization.

64155147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17842.

The product of its digits is 16800, while the sum is 33.

The square root of 64155147 is about 8009.6908180029. The cubic root of 64155147 is about 400.3229620852.

Subtracting 64155147 from its reverse (74155146), we obtain a palindrome (9999999).

The spelling of 64155147 in words is "sixty-four million, one hundred fifty-five thousand, one hundred forty-seven".