65312078 has 24 divisors (see below), whose sum is σ = 107577648. Its totient is φ = 29719872.

The previous prime is 65312077. The next prime is 65312083. The reversal of 65312078 is 87021356.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65312077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23351 + ... + 25997.

It is an arithmetic number, because the mean of its divisors is an integer number (4482402).

Almost surely, 2^65312078 is an apocalyptic number.

65312078 is a deficient number, since it is larger than the sum of its proper divisors (42265570).

65312078 is a wasteful number, since it uses less digits than its factorization.

65312078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 65312078 is about 8081.5888289370. The cubic root of 65312078 is about 402.7150257269.

The spelling of 65312078 in words is "sixty-five million, three hundred twelve thousand, seventy-eight".