65478039 has 8 divisors (see below), whose sum is σ = 95240832. Its totient is φ = 39683640.

The previous prime is 65478019. The next prime is 65478041. The reversal of 65478039 is 93087456.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65478039 - 2¹³ = 65469847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65478019) by changing a digit.

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, 992059 + ... + 992124.

It is an arithmetic number, because the mean of its divisors is an integer number (11905104).

Almost surely, 2^65478039 is an apocalyptic number.

65478039 is a deficient number, since it is larger than the sum of its proper divisors (29762793).

65478039 is a wasteful number, since it uses less digits than its factorization.

65478039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984197.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 65478039 is about 8091.8501592652. The cubic root of 65478039 is about 403.0558430252.

The spelling of 65478039 in words is "sixty-five million, four hundred seventy-eight thousand, thirty-nine".