64278842 has 16 divisors (see below), whose sum is σ = 99616392. Its totient is φ = 31083840.

The previous prime is 64278793. The next prime is 64278871. The reversal of 64278842 is 24887246.

It can be written as a sum of positive squares in 4 ways, for example, as 58232161 + 6046681 = 7631^2 + 2459^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64278842.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10292 + ... + 15312.

Almost surely, 2^64278842 is an apocalyptic number.

64278842 is a deficient number, since it is larger than the sum of its proper divisors (35337550).

64278842 is a wasteful number, since it uses less digits than its factorization.

64278842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233.

The product of its digits is 172032, while the sum is 41.

The square root of 64278842 is about 8017.4086836084. The cubic root of 64278842 is about 400.5800791970.

The spelling of 64278842 in words is "sixty-four million, two hundred seventy-eight thousand, eight hundred forty-two".