65678772 has 24 divisors (see below), whose sum is σ = 153701856. Its totient is φ = 21828448.

The previous prime is 65678749. The next prime is 65678779. The reversal of 65678772 is 27787656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65678779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3723 + ... + 12050.

It is an arithmetic number, because the mean of its divisors is an integer number (6404244).

Almost surely, 2^65678772 is an apocalyptic number.

It is an amenable number.

65678772 is an abundant number, since it is smaller than the sum of its proper divisors (88023084).

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

65678772 is a wasteful number, since it uses less digits than its factorization.

65678772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16127 (or 16125 counting only the distinct ones).

The product of its digits is 987840, while the sum is 48.

The square root of 65678772 is about 8104.2440733236. The cubic root of 65678772 is about 403.4672994111.

The spelling of 65678772 in words is "sixty-five million, six hundred seventy-eight thousand, seven hundred seventy-two".