65256646 has 24 divisors (see below), whose sum is σ = 121140144. Its totient is φ = 25814880.

The previous prime is 65256629. The next prime is 65256647. The reversal of 65256646 is 64665256.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 65256599 and 65256608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65256647) 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, 11425 + ... + 16156.

It is an arithmetic number, because the mean of its divisors is an integer number (5047506).

Almost surely, 2^65256646 is an apocalyptic number.

65256646 is a deficient number, since it is larger than the sum of its proper divisors (55883498).

65256646 is a wasteful number, since it uses less digits than its factorization.

65256646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27616 (or 27603 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 65256646 is about 8078.1585772997. The cubic root of 65256646 is about 402.6010620292.

The spelling of 65256646 in words is "sixty-five million, two hundred fifty-six thousand, six hundred forty-six".