65756478 has 32 divisors (see below), whose sum is σ = 134991360. Its totient is φ = 21344000.

The previous prime is 65756461. The next prime is 65756479. The reversal of 65756478 is 87465756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65756479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70318 + ... + 71246.

It is an arithmetic number, because the mean of its divisors is an integer number (4218480).

Almost surely, 2^65756478 is an apocalyptic number.

65756478 is an abundant number, since it is smaller than the sum of its proper divisors (69234882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65756478 is a wasteful number, since it uses less digits than its factorization.

65756478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

The product of its digits is 1411200, while the sum is 48.

The square root of 65756478 is about 8109.0368108672. The cubic root of 65756478 is about 403.6263537132.

The spelling of 65756478 in words is "sixty-five million, seven hundred fifty-six thousand, four hundred seventy-eight".