65777345 has 16 divisors (see below), whose sum is σ = 80146560. Its totient is φ = 51819264.

The previous prime is 65777303. The next prime is 65777347. The reversal of 65777345 is 54377756.

It is a cyclic number.

It is not a de Polignac number, because 65777345 - 2⁶ = 65777281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65777296 and 65777305.

It is not an unprimeable number, because it can be changed into a prime (65777347) 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, 173366 + ... + 173744.

It is an arithmetic number, because the mean of its divisors is an integer number (5009160).

Almost surely, 2^65777345 is an apocalyptic number.

It is an amenable number.

65777345 is a deficient number, since it is larger than the sum of its proper divisors (14369215).

65777345 is a wasteful number, since it uses less digits than its factorization.

65777345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824.

The product of its digits is 617400, while the sum is 44.

The square root of 65777345 is about 8110.3233597681. The cubic root of 65777345 is about 403.6690444646.

The spelling of 65777345 in words is "sixty-five million, seven hundred seventy-seven thousand, three hundred forty-five".