65055878 has 8 divisors (see below), whose sum is σ = 99237960. Its totient is φ = 31976560.

The previous prime is 65055871. The next prime is 65055883. The reversal of 65055878 is 87855056.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65055871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275543 + ... + 275778.

It is an arithmetic number, because the mean of its divisors is an integer number (12404745).

Almost surely, 2^65055878 is an apocalyptic number.

65055878 is a deficient number, since it is larger than the sum of its proper divisors (34182082).

65055878 is a wasteful number, since it uses less digits than its factorization.

65055878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551382.

The product of its (nonzero) digits is 336000, while the sum is 44.

The square root of 65055878 is about 8065.7224102990. The cubic root of 65055878 is about 402.1877583023.

The spelling of 65055878 in words is "sixty-five million, fifty-five thousand, eight hundred seventy-eight".