64615142 has 16 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 30759432.

The previous prime is 64615063. The next prime is 64615151. The reversal of 64615142 is 24151646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7109 + ... + 13407.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^64615142 is an apocalyptic number.

64615142 is a deficient number, since it is larger than the sum of its proper divisors (36991258).

64615142 is a wasteful number, since it uses less digits than its factorization.

64615142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6547.

The product of its digits is 5760, while the sum is 29.

The square root of 64615142 is about 8038.3544335890. The cubic root of 64615142 is about 401.2774617191.

Adding to 64615142 its reverse (24151646), we get a palindrome (88766788).

The spelling of 64615142 in words is "sixty-four million, six hundred fifteen thousand, one hundred forty-two".