65771340 has 24 divisors (see below), whose sum is σ = 184159920. Its totient is φ = 17539008.

The previous prime is 65771327. The next prime is 65771353. The reversal of 65771340 is 4317756.

It is an interprime number because it is at equal distance from previous prime (65771327) and next prime (65771353).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548035 + ... + 548154.

It is an arithmetic number, because the mean of its divisors is an integer number (7673330).

Almost surely, 2^65771340 is an apocalyptic number.

65771340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65771340 is an abundant number, since it is smaller than the sum of its proper divisors (118388580).

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

65771340 is a wasteful number, since it uses less digits than its factorization.

65771340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096201 (or 1096199 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 65771340 is about 8109.9531441310. The cubic root of 65771340 is about 403.6567600609.

The spelling of 65771340 in words is "sixty-five million, seven hundred seventy-one thousand, three hundred forty".