65940849 has 24 divisors (see below), whose sum is σ = 107976960. Its totient is φ = 38441952.

The previous prime is 65940829. The next prime is 65940857. The reversal of 65940849 is 94804956.

It is a happy number.

It is not a de Polignac number, because 65940849 - 2¹⁵ = 65908081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65940829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12609 + ... + 17054.

It is an arithmetic number, because the mean of its divisors is an integer number (4499040).

Almost surely, 2^65940849 is an apocalyptic number.

It is an amenable number.

65940849 is a deficient number, since it is larger than the sum of its proper divisors (42036111).

65940849 is a wasteful number, since it uses less digits than its factorization.

65940849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29701 (or 29698 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 65940849 is about 8120.3970962016. The cubic root of 65940849 is about 404.0032369933.

The spelling of 65940849 in words is "sixty-five million, nine hundred forty thousand, eight hundred forty-nine".