64312642 has 4 divisors (see below), whose sum is σ = 96468966. Its totient is φ = 32156320.

The previous prime is 64312639. The next prime is 64312657. The reversal of 64312642 is 24621346.

64312642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64304361 + 8281 = 8019^2 + 91^2 .

It is a super-2 number, since 2×64312642² = 8272231842040328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64312642.

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 as a sum of consecutive naturals, namely, 16078159 + ... + 16078162.

Almost surely, 2^64312642 is an apocalyptic number.

64312642 is a deficient number, since it is larger than the sum of its proper divisors (32156324).

64312642 is a wasteful number, since it uses less digits than its factorization.

64312642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32156323.

The product of its digits is 6912, while the sum is 28.

The square root of 64312642 is about 8019.5163195794. The cubic root of 64312642 is about 400.6502797677.

Adding to 64312642 its reverse (24621346), we get a palindrome (88933988).

The spelling of 64312642 in words is "sixty-four million, three hundred twelve thousand, six hundred forty-two".